Computer processing, Basic Computer Science

Assignment Help:

Computer Processing:

Most of the earliest computer memories have been based on physical elements which can exist in just one of the two states (on or off): such an element corresponds to one bit of information. Binary symbols are used because electronic devices can store and process them rapidly and cheaply. The physical devices used have been changed greatly,, but the principles of information representation mid manipulation within digital computers have remained essentially the same. The size of a computer can be described by the number of bits (binary digits) which its memory contains, but for most purposes larger units of storage are used to characterise machines. Generally, these are denoted by a byte which normally consists of 8 bits, and is sufficient to represent one character, and a word which can be of length -8, 16, 32 bits, is the smallest unit of storage to which most of the computer's instructions can be applied. Memories are usually described as being of a size measured in Kilobytes (K bytes) or Megabytes (M bytes). The sets or patterns of bits which make up bytes and words are used to represent all information within a computer, whether it is program instructions or data items.

The exact method of representation will vary from one machine to another, particularly with respect to instructions formats. An 8 bit byte can accommodate 256 different bit patterns and so it is sufficient to allow for most of the characters which could be required to be printed, e.g., upper and lower case letters A-Z, together with the numbers 0-9 and also a range of punctuation symbols, with allowance for non-printing characters such as end-of-line. The set of bit patterns corresponding to a set of characters is called a character code. Standard codes are ASCII  and EBCDIC. Numbers are normally represented by one or more computer words. Incase of integers, the set of 8,16, or 32 bits (as per the computer's word length) is treated as a binary integer (i.e., encoded in the notation of binary arithmetic). A real number is represented by dividing a computer word into two components: a simple decimal number (i.e., the mantissa portion) together with the power to which it must be raised (i.e., the exponent).  


Related Discussions:- Computer processing

Database assignment help , What îs exactly data type and Database Assignme...

What îs exactly data type and Database Assignment Help  ? We have can take several points of view, A data type îs set of values — char typically has 256 distinct values, into has

Describe counting instructions, They are used to reduce or enlarge the cont...

They are used to reduce or enlarge the content of the counters. DEC INC DEC INSTRUCTION Idea: To diminish the operator. Syntax: DEC destiny This action subtracts 1 from the destiny

Algorithm, algorithm to determine if a number is odd or even

algorithm to determine if a number is odd or even

Q: HOW DO YOU CODE -- WITHOUT USING ARRAYS OR SPLIT FUNCTION, Q: HOW DO YOU...

Q: HOW DO YOU CODE -- WITHOUT USING ARRAYS OR SPLIT FUNCTIONS -- TO SEPARATE COMMA SEPARATE NUMBER VALUES AND THEN SUM TO TOTAL? I.E., USING SUBSTRING AND INDEXOF. I''ve been try

Electronic mail , Electronic mail is another PC to PC and PC to mainframe ...

Electronic mail is another PC to PC and PC to mainframe data exchange. If you subscribe to an electronic mail service, it will enable your PC to gain access to a 'mailbox' on a ma

Explain the tcp/ip reference model with diagram, Question 1 Define the fol...

Question 1 Define the following terms                                   1) Analog Signals and Digital Signals 2) Composite signals Question 2 Define the following terms

Types of browsers, Types of Browsers: Line Mode Browsers : The initia...

Types of Browsers: Line Mode Browsers : The initial browsers were line mode text browsers. These browsers were simple and used to display text line by line. They used to prov

Explain the term "algorithmic delay", QUESTION a) What is Time Division...

QUESTION a) What is Time Division Multiplexing (TDM), illustrate your answer with a diagram b) Describe four types of RTCP messages c) i) What is silence compression in I

Prelude to programming concepts and design 5th edition, Input a list of pos...

Input a list of positive numbers, terminated by 0, into an array numbers []. Then display the array and the largest and smallest number in it.

Synchronizing Threads in python, The threading module offered with Python i...

The threading module offered with Python includes a simple-to-implement locking mechanism that will permit you to synchronize threads. A new lock is formed by calling the Lock() me

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd