technme

OPTICAL DRIVES Optical drives vary greatly in computer systems. When looking at a computer system there are two things to consider: the type of drive and the speeds. Drive Types There are two basic forms of optical storage used in computers today: compact disc (CD) and digital versatile disc (DVD). Compact disc storage was derived from the same media that we use from audio compact discs. They storage space averages around 650 to 700 MB of data per disc. They can contain audio, data or both on the same disc. Most software for computers is distributed on CD formats. DVD was the development for a compact digital video format that also spun off into the data storage arena. DVD is seen primarily for video and not for software distributions. DVD drives are still backwards compatible with CD formats however. Newer high definition optical storage has also become available in the form of Blu-ray and HD-DVD formats. Each of these is capable of storage high def...

RAM also known as (Random access memory) is the best form of computer memory. RAM is called "random access memory" or " volatile memory" because you can access any memory cell directly if you know the row and column that intersect at that cell and nothing can be stored on it as when power is switched off everything is washed off from the memory. The other type of RAM is serial access memory (SAM). SAM stores data as a series of memory cells that can only be accessed sequentially . If the data is not in the current location, each memory cell is checked until the needed data is found. SAM works very well for memory buffers, where the data is normally stored in the order in which it will be used. RAM data, on the other hand, can be accessed in any order. Dynamic RAM Similar to a microprocessor, a memory chip is an integrated circuit (IC) made of millions of transistors and capacitors. In the most common form of computer memory, dynamic random access memory (DRAM), a tr...

A processor is the logic circuitry that responds to and processes the basic INSTRUCTIONS that drive a computer. The term processor has generally replaced the term central processing unit (CPU). The processor in a personal computer or embedded in small devices is often called a microprocessor. source