Computer Hardware

Cladding in optical fibre is done for the total internal reflection of the waves propagating inside the fibre. The core of the fibre is made of material with less refractive index value than the material covering the core. When wave falls on the high refractive index material passing through the core it is reflected back.

Input device

If you have Windows, they are in C:\Windows\Temp , and cookies in C:\Documents and Settings\username\Cookies

If you have Ubuntu, I think they're in /tmp and home/username

Per the A+ book "Guide to Managing and Maintaining your PC," it says to know for sure what type of cable you're dealing with, trace the cable from its source to its destination.

Generally, a power cable will be coming from the power supply unit, while data cables don't. That is the big block in one of the corners of the case, with the power switch and AC in on the outside of the case. Also, power cables' sockets will almost always be either rectangular, split into an even number of equally sized squares, or rectangular with one rounded corner and 4 metal pins, whereas data cables come in all shapes and sizes.

The easiest way is to check if the cable is coming from the power supply. Most of the time power wires are black (ground), red (5v), yellow (12v), and sometimes orange (3.3 v). Power cables are usually large gauge wires.

Data cables are usually flexes or fine gauge wires. Data are grey or black ribbon cables, for PATA. Small flat single color for SATA (commonly red or black).

it is a port or a connection for a graphics card. It is the second version of PCI express with a speed of x16. To use a graphics card with this, you will need a PCIe 2.0 x16 port on your motherboard. Most modern motherboards have this.

OCR (Optical Character Recognition) is a program that is used to convert a scanned document into a text file that can be further edited. The downside is that not all the characters in the text file will have been converted properly. Further proofreading is necessary to correct any mistakes the OCR program has made.

Both are mobile computers. However, the mini laptop has a keyboard while the tablet does not. A mini laptop's screen is smaller than full size, while one side of a tablet is the monitor. A tablet's monitor is touch sensitive and has a virtual keyboard when required to input info. Both do not have any space for built-in storage drives. The mini laptop does provide ports for connecting an external drive, while the tablet does not.

A microphone and a computer mouse has only an output. A loudspeaker and a printer has only an input. That makes the mouse an INPUT device and the printer an OUTPUT device because they are named according to their use by the computer. It receives input from a mouse and sends output to a printer.

EDO RAM is a type of Dynamic RAM (DRAM) that improves the speed at which the processor can retrieve data from memory by allowing timing overlaps between memory accesses. EDO stands for extended data output.

It will depend on the resolution, length of the music video or movie and compression type which the video files use. e.g. For use in a pocket PC you can even have a full movie in AVI format which can be e.g. only 400MB per movie and that way you can have around 10 movies in a 1GB card. If your music video file size is 100MB you can have 40 of those in 4GB memory.

- Neeraj Sharma

A yobibyte is a unit of storage equal to 280 bytes.

1 expresscard

2 cardbus

3mini pci

4firewire

Metric prefixes are used either as powers of 10 or powers of 2^10 in the computer industry. Venue determines correctness.

Where 1 KB = 1000 Bytes, 50GB = 50,000,000 KB
Where 1 KB = 1024 Bytes, 50GB = 52,428,800 KB

It is both an Input and an Output device.

what are the technical details about each hardware component called?

It depends on the model. The AT-400 (which is rarely found in commercial use) can cost up to $75,000 per unit. The less advanced AT-250 (which can be found in most grocery stores and discount tire outlets) can be purchased for under $10,000 depending on the country it was produced in.

The newer i-phones have this function on a app.

It depends on the PATA drive in question. That said, the fastest UDMA interface when used with an 80-wire cable is 133 MB/s. From there, the maximum transfer rate for a SATA generation 1 drive is 150 MB/s. For SATA 2, it is 300 MB/s. For SATA 3, it is 600 MB/s.

Some keyboards have and don't have the Num Lock key. If there is then just press the Num Lock or NmLk key. Sometimes you have to hold the Fn button with the Num Lock key. If there is no Num Lock key on your keyboard then just follow these steps: START -> ALL PROGRAMS -> ACCESSORIES -> ACCESSIBILITY -> ON-SCREEN KEYBOARD -> NLK.

No because most external ones need software and you cant store the soft ware on the external one

This is inaccurate. An external (USB) hard drive can replace an internal drive providing that the operating system is located on the external drive AND the BIOS boot sequence is set to allow booting from a USB device as the first boot device.

Every computer has hardware problems eventually, so it's important to keep hardware diagnostic tools on hand. It could be because your computer will not boot due to a problem which could be either hardware of software related.

But you don't need to spend money on expensive tools. These five free tools can help you diagnose most hardware problems.

1. Memory Scan

It's almost impossible to diagnose a problem with your computer memory (RAM) without a memory scanner. Luckily, you don't need a special hardware memory checker-you can use a tool to boot your computer into a special mode which will check your memory. There are several good tools, but I recommend the open source MemTest86, which works on Intel-style 32-bit and 64-bit PCs.

2. CheckDisk / BadBlocks

If you think your hard drive has a problem, you need to check the whole drive for possible errors. If you find a few errors, you may be able to continue to use the drive as long as you re-check the drive on a regular basis. If you find a bunch of errors, you'll need to replace the drive.

The free tool built into Windows XP and higher to check your drive is called CHKDSK (for Check Disk). Linux bootable CDs and USB drives include a similar but more comprehensive tool called badblocks.

3. Spare Cables

Although spare cables aren't free if you buy them separately, most people who regularly buy computer accessories tend to accumulate spare cables. Don't throw out those spare cables. A surprisingly large number of hardware problems are caused by failing cables, and swapping your current cable with a spare is a simple and free way to test whether or not your problems are caused by bad cables.

ICT Printing Press is product for offset Printing Press. It simply takes few related parameters of customer's order as input and present total estimation of project, most economical job size, machine, paper stock cutting plan for sheet or reel. It is newest ICT HARDWARE.

There are two main forms of reproduction:

1) Asexual - In this, only a single parent is required. This is the form of reproduction in primitive organisms. The parent simply divides itself into two. The type of cell division is mitosis. The children produced are a genetic clone to the parent. Hence this is not favorable where genetic mutations are necessary.

2) Sexual - In this, two parents are required. This is the form of reproduction in higher organisms including humans. Each parent cell divided into 4 leading to cells with half the chromosome count(meiotic division). Then two meiotic cells fuse to form the zygote in which the original chromosome count is restored. It leads to genetic variation in the offsprings enabling them to survive better in the mutating environment.

One of the difference can be :

- PROM logic contains fixed AND gate & programmable OR gate

- in PLA, both OR and AND gates are programmable