Flash Drives

September 20th, 2008

Introduction

The USB flash drive is the technological, logical and honorably worthy successor to the floppy disk drive. It is removable so that you can transfer the data it stores from one computer to another, simply by removing it from one and plugging it into another. Flash drives use a standard type-A USB connection, and are “plug and play,” in the sense that as soon as you plug one into a computer, the computer recognizes that it has just acquired another drive, which it usually designates as “drive E.” On the other hand, it is always possible to format the flash drive, and even to partition it like a hard disk on a PC or a Mac. Also, they don’t mind at all being formatted in Linux or Unix.

Normally, the flash drive’s data becomes immediately accessible, just as though you had inserted a floppy disk into a floppy disk drive. Although the flash drive acts just like any other disk drive, to call it a drive is a misnomer, because it has no moving parts, and so nothing is being “driven.” Although it relies on solid-state circuitry, nonetheless, the name “drive” has stuck. Flash drives are to be distinguished from the Flash Cards used in digital cameras or MP3 players. Other names for flash drives are: Thumb Drives, Jump Drives, Pocket Drives, and Pen Drives.

These “drives” are almost all compatible with both Universal Serial Bus specifications 1.1 and USB 2.0, which replaced 1.1 in 2001, so they should run on any PC or Mac that actually has one or more USB receptacles or slots into which they may be plugged, which is most of the computers out there today. To determine whether your PC’s USB slots are 1.1 or 2.0, open device manager and expand the Universal Serial Bus section. There should be an “Enhanced” USB host controller present if USB 2.0 is in place.

On the older machines, most flash drives just default to the USB 1.1 specs., and so run a bit more slowly. As a practical matter, fast USB host can in actual practice achieve transfer rates of up to 30-40 Mbs. per second, while the older specification permits a (theoretical) maximum of only 12 Mbs. per second, but in practice tends to function at just about 1 Mb per second. To upgrade to the faster speed, if you have a free slot you can just pop in a USB 2.0 PCI card, which will do the trick.

Uses

Uses are as varied as your imagination. These Swiss army knives are often favored by system operators and network administrators, who load them up with configuration information and software that they use for system maintenance, troubleshooting, and data recovery. People in the PC repair field use them to transfer recovery and antivirus software to infected PCs, while allowing a part of the host machine’s data to be archived in case of emergency. If you plan to use one for this purpose, be sure that it can be set with write protection. Not all drives are write protectable, but if you are going after a virus, this is a very important feature.

Many people use flash drives to carry applications that run on a host computer without requiring installation. Flash drive vendors support U3 by offering API to flash drive-specific functions. A free, open source, software platform called Portableapps allows U3-like functionality on non-U3 drives. The Mozilla’s Firefox, and the Opera browser, each have a configuration for flash drives. There is also a Creative MuVo, a small solid-state digital audio player that comes in a flash drive form.

To boot ailing operating systems is another use. Much like the way used in LiveCD, one can launch any operating system from a bootable flash drive, known as LiveUSB. In Windows Vista, the “ReadyBoost” feature allows use of some flash drives to augment system memory, which makes it one of life’s cheapest possible system upgrades.

An increasingly popular use of flash drives is for people to carry their entire medical history, lists of ailments, medications, allergies, etc., on their key chains for hospital use should a medical emergency arise.

Of course, the most common use is to transport and store personal files such as documents, pictures, music and video.

Buying considerations concern:

Capacity – the 32 and 64 Megabytes are being phased out. Go for a larger drive instead.

Speed – This is usually quoted either in Megabytes or Megabits per second to read and to write. There are 8 Megabits in one Megabyte.

Physical size – they range from the size of 3 “C” batteries down to that of a pack of gum, or even smaller. This is important because of the fact that USB slots are usually very close to each other, so a physically large flash drive could block another USB slot. You can, of course overcome this problem with an adapter.

Design – Most units have protective covers for the USB plug. Some fit on key rings or have small cables to fit with lanyards or to hang from hooks, etc.

Built-in Features – some have a LED that lights up to indicate when data is being transferred.

Compatibility – Almost all will work with Windows 2000, Mac OS 9.0, and Linux 2.4.10 or higher without any special drivers. Most work with Windows 98SE and Mac OS 8.6 with a download from the manufacturer.

Warrantee – Many units have a 1 to 5 year warrantee. Some even come with a lifetime warrantee.

How to Choose

Since this technology is the successor of the floppy disk, and since it comes in a variety of speeds, capacities, etc., you should buy have on hand several of these drives for various purposes. If you are just moving data between computers, the speed is relatively unimportant. If, however, you are using the drive to make a presentation loaded with graphics to an important audience, then be sure you have an extra drive with the same information, and go for the maximum speed and capacity you can afford. One size does not fit all. If you are distributing data to a lot of older machines, then make absolutely sure that your drive is in fact backward compatible (most are, but please be sure).

Like any other kind of drive, these flash drives need to be backed up in some way. However, because these drives are extremely rugged, and due to their lack of moving parts are extremely reliable, you might choose to view the warrantee as a lesser consideration than the other main characteristics. They are virtually impervious to the dust and scratches that afflicted previous forms of portable storage, such as CDs and floppy disks, and top of the line flash drives can store more data than a DVD. The flash drives’ robust nature and low price make them both extremely reliable, and certainly a wholly worthy successor to the now obsolescent though still dearly lamented floppy disk drive. [Moment of Respectful Silence; imagine the smell of lilys and the sound of subdued organ music]

Phones

September 19th, 2008

Onhop is a good place to get cell phones and their accessories.

We offer a wide range of choices to fit your needs and your budget. You will also find accessories that allow hands-free use, or find Blackberry, Palm, and other smartphone handsets that provide a convenient solution for travelers who need a reliable wireless connection to email, and to use calendars and internet services.

If you have not looked into computer-based telephony lately, we should mention that VoIP (or Voice over Internet Protocol) solutions have improved enormously over the last few years — provided, of course, that you have a broadband (DSL, satellite or Cable) connection. You will notice that many of our offerings are designed specifically to work with a VoIP service called www.skype.com, which is currently the leading provider. You must first download the Skype program, which is free. Then with Skype, computer-to-computer calls will be all and always completely free. Skype’s slogan is: “Talk, listen, watch, read, write to anyone, anywhere in the world without worrying about cost, distance or time.” With Skype, computer to telephone calls are not free, but they are quite significantly cheaper than with the regular long distance providers. In practically no time you will have saved the cost of your Skype-friendly equipment, and from then on the savings will mount year after year.

Of course you can and should check out the ratings given to our offerings by consulting Consumer Reports (www.ConsumerReports.org). You can also access free Consumer Reports online courtesy of your local library (www.accessmylibrary.com). As well, you can consult the Consumers’ Web Watch (www.consumerwebwatch.org), the Consumers’ Union (www.consumersunion.org), and do not forget the Consumer Electronics Net (www.consumerelectronicsnet.com). A happy shopper is an informed shopper, and we want you to be happy.

Monitor Stands

September 18th, 2008

What should you look for in a computer monitor stand?

If your monitor is a CRT type, look for massive carrying capacity; if your monitor is a LCD type, look for easy adjustability. With a LCD type monitor, because one needs to be looking at it very straightforwardly, you may find you will need to twist it on its stand fairly often to show the screen to another person.

Position your monitor so that light and glare from inside lights or from windows do not reflect from the monitor, which usually means positioning the screen at right angles to the nearest window. If you use a document stand, ensure that it is in much the same position as your monitor, and only slightly off center, so that you can look at either without having to make much change in your own sitting position.

Ergonomically, the best fit between you and your monitor is that the monitor should be about arm’s length away and the top of the monitor should be at eye level, or just slightly below. This is necessary to let you read the screen without having to pull your neck forward or push it back. People who use bifocal glasses, whether progressive or not, will have to experiment a bit to find the correct distance, which will mean that you can read the screen best without having to twist your head out of its normal upright position.

When looking for a monitor stand you first need to determine how high it should be. That is, measure the height of your monitor itself plus the height of whatever furniture it will be resting upon, and then figure out how much it should be raised to meet the exact height requirements just mentioned. Only now will you be able to address the question of whether a particular stand will get the monitor up to the right height. Look at the stand’s detailed specifications, which should tell you whether the height is adjustable, and if so by how much. Do not part with your hard-earned money to buy a stand that will not meet your exact personal requirements.

Now, you could accomplish these relationships with a stack of old newspapers as your stand. So why buy a stand at all? One reason is esthetics. Another is to ensure that your monitor rests safely on a solid platform. The most important reason is to let you reclaim some storage space underneath the monitor, perhaps to store your mousepad and keyboard.

Think of what materials you use most often, and ensure that you store these close at hand, say no more than one foot away (call this zone 1). Materials that you use a lot, but less frequently than those in zone 1, you could store, say, two feet away, in zone 2. Materials and parts you use most infrequently you can store still further away, possibly even so far that you will have to get up from your sitting position to reach them, in zone 3. Zones 1 and 2 will help prevent unnecessary motion, while zone 3 will force you to abandon your fixed posture while you do a bit of stretching and give yourself a break that will help to prevent cumulative trauma to the back, neck and shoulders.

It is best if what the computer monitor stand sits on has rounded corners. Why, you might ask. Well, it has been scientifically determined and repeatedly proven beyond any possible doubt that, worldwide, the absolutely most perfect instrument for finding furniture in a dark room is the human shinbone.

Cellular Phones

September 17th, 2008

Manufacturers of mobil phones use lots of tricks to force users to stick with them, and this includes creating a wide variety of connector styles and voltages, most of which are incompatible with other manufacturers’ phones. Sometimes, even though the connector may fit, the actual charging parameters may not, which can produce an inadequate charge or even permanent damage to the device. As we’ve been saying in the business world ever since ancient Roman times, Caveat Emptor (let the buyer beware!). Carefully check the specs. for both the phone and the charger that interests you, and you should be just fine.


Here at Onhop.com, we never forget who provides the money that lets us butter our parsnips – it is you, the satisfied customer who keeps on coming back because we treated you right. We’re on your side for that very good reason.

Lamps

September 16th, 2008

Think of these as computer supplies rather than computer parts. Like the light bulbs in your house, they must be replaced periodically.

Computer Cases

September 15th, 2008

Computer cabinets are fitted with doors and side panels which may or may not be removable.

Cabinets enclose a rack, which is a frame that provides a means for mounting electronic equipment and parts. Cabinets come in a variety of styles, colors, and many contain baffles, fans, and other features. The rack refers specifically to the inside frame that provides a means for mounting electronic equipment, while a cabinet is fitted with doors and side panels. The cabinet must allow air to come in and, after it has done its work cooling the parts that would otherwise overheat, to go out. The cabinet should permit the mounting of a filter to keep dirt, dust, smoke, human and pet hair, etc., out of the computer works. The average computer has two fans, one in the power supply and one attached to the computer chip that constitutes the main processor. Without a filter, the fans will deposit a lot of dirt throughout the cabinet, and onto and possibly even into the drives. This may eventually produce read/write errors, and place those errors onto your backup media as well; lost data is the result. It is also possible that eventually your fans will get so clogged up that they will fail and permit the computer to overheat, slowing performance, producing lockups, and eventually shutting you down completely.

Your cabinet should be tough, and it should have a sturdy locking device so that you can control access to your computer. These two characteristics are especially important whenever critical data needs to be protected. Make sure that the cabinet contains all of the rack capabilities you will require, and that it is rated for the correct wattage of power. Some of them come with the power supply already installed.

Tablet PCs

September 14th, 2008

The basic design of a tablet PC rests on the idea of separable components. This ultralight notebook also seeks to bring back the writing tablet, the oldest and most natural form of non-verbal communication. Its built-in digitizer pen acts in place of a mouse, and also lets one write B either left or right handed B on the screen. Otherwise a tablet works just like a standard notebook, except that with an optional docking station one can gain virtually all of the capabilities of a desktop. You can run all of your favorite programs on tablets.

Tablets do get fairly warm, so if you are using it on your lap for very long you might want to put some insulation, say a washcloth or two, between your thighs and the machine. Since the tablets= first introduction in 2002, prices have come down considerably, along with the amount of heat, and most now come with a lot of bells and whistles.

The tablet PC represents a major advance in the evolution of personal computing devices. One can use a tablet PC, suitably configured, to run any standard Windows program that will run on a desktop B except for Windows itself, which comes in a format of XP or Vista specially designed for tablets. The Microsoft Office suite also now has a built-in stylus or pen functionality.

By themselves, tablets typically weigh slightly more or sometimes even less than 4 pounds, and typically they have small (9″ or 10″) screens, though widescreen displays are available. How much hard drive space (and whether it is internal or external) to get is up to you. Similarly, how much memory you get will depend upon your needs and budget. Remember that although processor speed is the most important factor determining a computer=s overall speed, the amount of memory is a close second. Try to get lots of both.

Here are some basic characteristics:

1. Many come with regular keyboards, and all are keyboard compatible, but the stylus is very intuitive and you will quickly master its use.

2. One can use a regular mouse if you wish, though one quickly discovers that the stylus or pen is a natural and highly efficient tool, and one that lets you be mobile to the maximum degree. 3. You may also plug-and-play any standard Universal Serial Bus or USB device. 4. Tablets all have built-in wireless (Bluetooth 802.11x) Internet capabilities.

5. Usually an undocked tablet=s central processing unit or CPU will be slightly slower than that of a desktop, but wholly adequate for virtually any task you can think of.

6. Tablets have amazingly accurate capabilities through sound recognition and through optical character recognition (OCR) to make files out of voice and handwriting input. 7. Lightness is often combined with the rugged construction required by military standards.

8. With respect to mobility and extended battery life, these machines are outstanding.

Tablets come in two basic forms, slates and convertibles. Convertibles have a screen that tilts 180 degrees, for use in either portrait or landscape mode, and it folds down over a keyboard. Slates have no keyboard except, when placed in an optional docking station or when purchased as an optional accessory. The idea is that you need only to carry with you what you need to get the job done. Now that’s progress.

Early adaptors include music composers, graphic designers, student notetakers, traveling salespersons, realtors, and anyone who works “in the field.” They often find that by eliminating many trips back and forth to and from home and/or office, their tablets save them the purchase price in less than a year.

www.lifehacker.com conducted a survey in February, 2008 that shows quite clearly the rapid trend toward portable computing. It asked users were asked whether they owned a desktop (22.8%), laptop (29.6%), or both (47.6%). The next question was, if shopping now whether the respondent would buy a laptop (58.2%) or a desktop (27.6%) or both (14.1%).

This survey left out the possibility of having the best of all possible worlds without the necessity to struggle with two completely separate sets of files, and all the headaches that brings for problems such as version control.

The new and very sensible solution is to buy a tablet or light notebook PC or Mac, and use it as such in the field, but when in the home or office to plug it into a docking station, which in effect turns it into a full-featured desktop machine.

* Because the files are all on the mobile computer’s hard disk, keeping track of them becomes immensely simpler.

* A tablet PC together with a docking station will typically cost much less than both a desktop and a mobile computer that function wholly separately.

* It’s almost like having your cake and eating it too.

OnHop lists docking stations separately, so please be sure to read about them in their own category on this website.

www.nuancesystems.ca quotes Scott Leforce, President of Realty World of Northern California and Nevada. Leforce, expressing the wave of the future, when he said: “Give your laptop to your kids because you don’t need it anymore; it slows you down.”

It is now time for you seriously to consider buying a tablet PC.

Accessories and Parts

September 10th, 2008

Accessories

Dot Matrix Printers

September 9th, 2008

These machines produce characters and illustrations by striking pins against an ink ribbon to produce closely spaced dots in an appropriate shape. Dot matrix printers are relatively expensive and do not produce high-quality output. However, they can print to multi-page forms (that is, carbon copies or carbonless copies), something laser and inkjet printers cannot do. Dot matrix printers are also more flexible than daisy wheel printers, because they can print graphics and text in many typefaces. Although reasonably expensive to buy, they are far cheaper to operate than lasers or inkjets, because their ribbons are non-proprietary commodities, and so to not require the “technological rent” one must pay for ink or toner cartridges. That is why this is the technology of choice for ATM machines, cash registers and many other point-of-sales terminals.

Another reason for their widespread use is that they are highly durable and relatively easy and cheap to repair, and when not used for a long time, their ink tends not to dry out. Also, they are capable of using continuous paper feed rather than requiring individual sheets, so there may be far fewer paper misfeeds, and they stand up well to adverse industrial conditions that might put other print technologies out of business. Their main uses are in areas of intensive transaction processing systems that churn out a lot of printing.

Dot-matrix printers vary in two important characteristics:

· speed: refers to characters per second (cps), which can vary from about 50 to over 500. Most machines offer different speeds depending on the quality of print desired; as quality goes up, speed naturally goes down.

· print quality: Determined by the number of pins (the mechanisms that print the dots), which can vary from 9 to 24. The best dot-matrix printers have 24 pins, can produce near letter-quality type, although one can still see a difference upon close examination.

· noise: Compared with laser and ink-jet printers, dot-matrix printers are notorious for making quite a racket. Noise deadening is available, and should be considered part of the overall purchase price.

Also take into account the input tray or trays, the amount of memory, and the printer’s compatibility with your operating system.

Hard Drives

September 8th, 2008



How to buy a DVD drive.


The two new optical drive formats, Blu-ray and HD DVD, are being backed by Enterprise titans, Sony and Microsoft respectively. One may confidently expect that neither will wholly prevail, and that therefore one day soon drive makers will come up with drives that are compatible with both. There will always be some people who want to be early adopters. They tend to be technologically savvy, and probably do not need to read our simple how-to buy tips.



What are the rest of us to do?



Regular DVD drives remain an inexpensive option. They are being continually improved, and some new ones can write DVD disks as quickly as 20X – which is faster than the mass marketed media (disks) can receive. There are two kinds of disks, write once (R) and rewritable (RW). Use the write once for videos or albums you are collecting, and the rewritable for incremental data backups.



There are also two kinds of disks, single (SL) and dual layer (DL). Each single-layer disk can store up to 4.7GB, and each double-layer or dual-layer disk can store up to 8.5GB. These disks are inexpensive, though the latter costs more because they are more difficult to produce. Eight point five gigs is enough to store a two hour-long video. Think about just how much storage you really need.





· Dual-layer disks burn at up to the maximum that most disks can receive the incoming data, which is 8X. Some drives can now write dual-layer disks at 10X speed, but with them you must use only compatible disks.


· Single layer R (write once) DVD-R and DVD R disks write at up to 20X, DVD-R DL at up to 8X, and DVD R DL at up to 10X.


· Single-layer rewritable DVD-RAM disks burn at up to 12X, DVD RW disks at 8X, and DVD-RW disks at 6X.


· Most DVD drives can write to CD-R disks at speeds of 48X to 52X, that is, their top speeds are roughly comparable.


While speed is an asset, remember this rule (a variant on the rule that you cannot eat your cake and have it too): the more slowly you burn your disks, the more perfect your recording is likely to be.



The compatibility factor.


Most DVD drives support reading from and writing to the major incompatible formats, DVD-RW and DVD RW, and many also support DVD-RAM as well. These last may be called super multi drives. The drive you buy simply must support both of the first two formats for inter-machine compatible reasons. It probably should support DVD-RAM as well, because this format has the most robust error correction available, and it will give you random access to a rewritable disk, much like a hard drive does. While DVD-RAM is the least compatible with the drives that are out there in consumerland, it has yet another advantage. Using RW disks, it can rewrite up to 100,000 times, which in practice, and barring some accident, means that your disks will last for a lifetime or two or three. DVD-RW and DVD RW formats can only rewrite up to about 1,000 times.



A popular frill.


Hewlett Packard’s LightScribe Direct Disk Labeling technology eliminates sloppy ink labeling by using the burner’s laser to etch a monochromatic label directly onto the disk’s top surface. It requires specially coated LightScribe media. An elaborate label can take up to 20 minutes to etch.



Software considerations


All legitimate retail drives include video DVD authoring software that permits you to create menus and to encode analog video to MPEG-2, so that you can play the video DVD on a standard TV-top DVD player. All such drives also can create data DVDs with the mastering and packet-writing software that comes in the bundle. Some common bundles include scaled down OEM [Original Equipment Manufacturer] versions of Nero, such as Nero Ultra 7 Enhanced, or Roxio’s Easy Media Creator 9, so look for a bundle that offers the most full-featured version of such software. Also see if the package includes backup software and additional video or image editing software. Because, at a given speed, all burners are created essentially equal, you may wish to pick the one that offers the most software or the most attractive software.



Caveat Emptor (Let the buyer beware)


Do not be tempted by a drive that is drastically underpriced. If the bargain seems too good to be true, you can bet your sweet bippy that it is. This drive probably will come without any software, no warranty, and none of the necessary firmware updates. Such a drive is probably one that was initially intended to be sold as a bare OEM drive. Sold separately, it is likely to give you considerable grief. Please just say no. Summon up massive amounts of willpower, and resolutely just don’t go there.


To help yourself do this, please remember a most fundamental law that in Uncle Remus’ story Br’er Rabbit discovered when he assaulted the Tar Baby: Anything is much easier to take apart than it is to put together.