Describe memory and memory unit, Computer Engineering

Q. Describe Memory and Memory unit?

Input devices can fetch instructions or data only sequentially though a program may or may not be executed sequentially because looping, jump, decision-making instructions are frequently encountered in programming. As well more than one data element may be needed at a time. Hence a temporary storage area is required in a computer to store temporarily the instructions as well as the data. This element is termed as memory.

Memory unit stores all information in a group of memory cells like a group of 8 binary digits (which is a byte) or 16 bits or 32 bits and so on. These groups of memory cells or bits are known as memory locations. Every memory location has a unique address and can be addressed individually. Contents of desired memory locations are supplied to CPU by referring to address of memory location. Amount of information which can be held in main memory is termed as memory capacity. Capacity of main memory is measured in Mega Bytes (MB) or Giga Bytes (GB). One-kilo byte denotes 210 bytes that are 1024 bytes (or just about 1000 bytes). A Mega byte denotes 220 bytes that is near about a little over one million bytes and a giga byte is 230 bytes.

Posted Date: 7/17/2013 12:18:57 AM | Location : United States







Related Discussions:- Describe memory and memory unit, Assignment Help, Ask Question on Describe memory and memory unit, Get Answer, Expert's Help, Describe memory and memory unit Discussions

Write discussion on Describe memory and memory unit
Your posts are moderated
Related Questions
What is hysteresis? Hysteresis is well known in ferromagnetic materials. When an external magnetic field is applied to a Ferro magnet, the atomic dipoles align themselves with

In the module on WSDL you were presented with the details of the WSDL service that receives a request for a stock market quote and returns the quote. The basic structure of a WSDL

Q. What is Tape Backup? Magnetic tapes are used these days in computers for the below purposes: Backing up data stored in disks. It is essential to regularly save data s

Described different types of addressing modes available? Ans: The various types of addressing modes available are following:   Register addressing mode   Immediate ad

Q. Writing down your own Interrupt Service Routines? Here are a few rules which should be kept in mind while writing down your own Interrupt Service Routines: 1.  Use Int 21

A persistent cookie is a cookie which is keeps in a cookie file permanently on the browser's computer. By default, cookies are formed as temporary cookies which keep only in the br

Any function can be expressed in a truth table.A truth table lists all possible combinations ofinputs and gives the output produced in eachcase.Truth tables must include all combin

With relevant diagram explain the working of master-slave JK flip flop. Ans. Master-Slave J-K FLIP-FLOP: A cascade of two S-R FLIP-FLOPS is a master-slave J-K FLIP-FLOP. One

Give the organization of centralized store program control ( SPC). Within stored program control systems, a program or set of instructions for the computer that is stored in