description of Instruction execution, Basic Computer Science

When software is installed onto a modern day personal computer (most commonly from a CD-ROM, though other media or downloading from the internet is also common), code comprising the program and any associated files is stored on the hard drive. This code comprises of a sequence of instructions for performing designated tasks, and data associated with these instructions. The code remains there until the user chooses to execute the program in question, on which point sections of the code are loaded into the computer’s memory.
The CPU then executes the program from memory, processing every instruction in turn. Certainly, in order to execute the instructions, it is necessary for the CPU to understand what the instruction is telling it to do. Consequently, recognition for instructions that could be encountered requires to be programmed into the processor. The instructions that can be recognized by a processor are referred to as an ''instruction set'',
Once the instruction has been recognized, and the actions that should be carried out are decided upon, the actions are then performed before the CPU continues on to the next instruction in memory. This process is called the ''instruction execution cycle'',
Results can then be accumulated back in the memory, and later saved to the hard drive and perhaps backed up onto removal media or in separate locations
Posted Date: 5/3/2012 7:28:04 AM | Location : United States







Related Discussions:- description of Instruction execution, Assignment Help, Ask Question on description of Instruction execution, Get Answer, Expert's Help, description of Instruction execution Discussions

Write discussion on description of Instruction execution
Your posts are moderated
Related Questions
design railway maintenance system. draw er diagram.

which one of the following is a valid identifier

1. Suppose that the meaning of the BUN instruction of the Basic Computer is changed to implement the relative addressing mode, i.e PC a) Write an optimal operation sequence to im

How to crete a web page name esp.html that allows users to conduct an ESP test

DATA TRANSMISSION: When we talk on the telephone we generally transmit a message to someone else. The message is made up of words that we speak into the telephone instrument.

I need help! import cgi, cgitb cgitb.enable() HTML_head = ''Content-type: text/html\n\n'' HTML_top = '''''' Restaurant Results '' Restaurant Results '''''' HTML_bottom =

Programming Languages A number of programming languages are available for program writing. These languages can be classified as follows:     Machine language     Assem

Digital Video Disks: DVD stands for Digital Video Disks or Digital Versatile Disks. A DVD stores much more data than a CD-ROM. Its capacities are 4.7GB, 8.5GB, and 20GB etc. T

Access time: Access time: This is the time required to locate and retrieve stored data from the storage unit in response to a program instruction. That is the time interval be

two characteristics og CISC architecture?