Information about RAM

RAM or Random Access Memory is used to hold the information needed to make your computer work and start. When you switch the power on, it reads all information which is needed to start one of the hard drives into memory and once the window is loaded, the computers loads the different applications stored in it.

The reason for this is because computer RAM is a hundred times faster than a hard drive which allows the computer to perform faster. 2GB of RAM is recommended if you want to store photo and video files always. Speed of RAM is measured in MHz or MHz. Another speed is the CAS speed which is measured in Nano seconds or ns.

Difference of DRAM from SRAM

DRAM or Dynamic Random Access Memory is the main memory and needs constant refreshing making it slower while SRAM or Static Access Random Memory is the cache memory that does not need refreshing but it is thus more expensive.

DRAM is physically stored on Dual Inline Memory Module (DIMMs) having a 64 bit path that uses EDO or Extended Data Output and (Single Inline Memory Module) SIMMs with a data path of 32 bits and comes in a variety of ways such as PFM or the Fast Page Mode while SRAM is housed on the system board on Cash on a Stick (COAST) modules or single chips or included inside the processor case.

CPUs-Have a Quick Look

Central Processing Unit (CPU) or in other words, the Processor, is recognized as the brain of a computer system. All the instructions, calculations, logical and arithmetic operations, and I/O operations are performed and executed from this unit. The fundamental operation includes the execution of some instructions stored in the physical memory, which is also called a program. A program consists of some series of numbers arranged in a logical form.

For any kind of CPUs, the basic steps of operations are the same. Generally, those are represented as fetch, decode, execute and mark back. Firstly, the fetch step recovers the stored instructions from the memory, and then the decoding step decodes the instruction for creating a significant signal to the different parts of the CPU. After that, execution takes place, in this step; various parts of the CPU join themselves accordingly to perform the requested task.

Finally, in the mark back step, it marks or writes the instruction found in the execution step in a form of memory for quick future operation. Processors from different brands like Intel, AMD, Compaq, Samsung, Dell, Ncr, Alcatel, are available for an affordable price.

PROMs-Things to Know

Programmable read-only memory, shortly pronounced as PROM is one kind memory that holds the data written on it permanently. In this type of memory, data can be written for only one time. However, there is a significant difference between a RAM and PROM. The RAM can hold the data when the computer is turned on, but the information containing on a PROM remains there even after the computer is turned off.

Another difference between PROM and ROM is, during the manufacturing procedure, the ROM is programmed by the manufacturers, while PROM is designed as a blank memory and a user can write data on it by the help of a PROM burner.

PROMs-Things to Know

Programmable read-only memory, shortly pronounced as PROM is one kind memory that holds the data written on it permanently. In this type of memory, data can be written for only one time. However, there is a significant difference between a RAM and PROM. The RAM can hold the data when the computer is turned on, but the information containing on a PROM remains there even after the computer is turned off.

Another difference between PROM and ROM is, during the manufacturing procedure, the ROM is programmed by the manufacturers, while PROM is designed as a blank memory and a user can write data on it by the help of a PROM burner.