Random access memory (ram), Basic Computer Science

RANDOM ACCESS MEMORY (RAM):

The RAM-type memory will allow data to be written into it, as well as read from it. With very few exceptions, RAMS lose their contents when the power is removed and are thus known as "Volatile" memory devices.  All computers use RAM to store data and programs written into it either from keyboard, or external sources such as magnetic tape/disk devices.

RAMs are often described in terms of the number of bits, i.e. 1s and 0s, of  data that they hold, or in terms of the number of data words, i.e. groups of bits, they can hold.  Thus a 16384 bit ram can hold 16384 1s and 0s.  This data could be arranged as 16384 1-bit words, 4096 4-bit words or 2084 8-bit words.  Semiconductor memories vary in size, e.g. 4K, 64K, 128K, etc.  Hence we are using K defined as:

K =210 = 1024

Thus a 16K memory has a storage capacity of 16 X 1024 = 16384 words, a 128K memory 0f 1310672 words and so on. There are two main members of the RAM family:

  • Static RAM.
  • Dynamic RAM.

 

The essential difference between them is the way in which bits are stored in the RAM chips.  In a static RAM, the bits of data are written in the RAM just once and then left until the data is either read or changed.  In a dynamic RAM, the bits of data are repeatedly rewritten in the RAM to ensure that the data is not forgotten.

 

Posted Date: 9/13/2012 6:57:29 AM | Location : United States







Related Discussions:- Random access memory (ram), Assignment Help, Ask Question on Random access memory (ram), Get Answer, Expert's Help, Random access memory (ram) Discussions

Write discussion on Random access memory (ram)
Your posts are moderated
Related Questions
In this problem we will compare the performance of a vector processor with a system that contains a scalar processor and a GPU-based coprocessor. In the hybrid system, the host pr

I. Write an application that accomplishes the following tasks: 1. Read a text file that contains, integers, doubles, alphabet, alphanumeric, and others. The name of the input fil

Sometimes you may drop to perform conversions among the built-in types. To translate between types you just use the type name as a function. There are quite a few built-in function

Nano programming using microcontrol and circuits

Question 1 What is difference between cathode ray tube monitors and LCD monitors? List three popular types of operating systems and give brief introduction of each type Que

Do you offer application programming? Please suggest?

The cost of building and maintaining an organizational computing ecosystem has become a bigger part of most organizations’ budgets. Organizations have been looking for ways to redu

Problem 1 Research designs have a critical and directive role to play in the research process. Explain the meaning of research design. Describe the various types of research de

INTERNET Internet: The global network of computers linked by exclusive and regular phone lines and microwave and satellite signals. Extranet: An extranet is the part of

Subject Name CIT2193 COMPUTER ARCHITECTURE Topic ASSIGNMENT Due Date 16 March 2012 Name : ……….…………………….……………….. Lecturer : ................................. Intake : ………………….