• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Computer Subsystems - The internal bus architecture

Extracts from this document...

Introduction

Computer Subsystems. Task 1 a) The internal bus architecture It is a collection of wires, which the data is transmitted from one part to the other. The internal bus connects all the internal computer components to the CPU and main memory. There are two parts of any bus these are an address bus and the data bus. The size of the bus is measured in width. This is important because it determines the amount of data being transmitted. For example a 16 bit bus can transmit 16 bits of data. Nearly all the PC's today include a local bus for which is needed for faster processing for things such as video data. ...read more.

Middle

At the beginning of a program the Program Counter is set to point at the memory location where the start of the program can be found. After the first instruction has been loaded, the Program Counter is incremented to point at the next instruction, which is then loaded during the next Fetch Decode Execute cycle. The Memory Address Registry (MAR) holds the data or instruction currently being worked out. The Main Memory is where everything is stored on the computer. Every memory address has data or an instruction. The Memory Buffer Registry (MBR) holds the data that was either written to or read from the main memory. ...read more.

Conclusion

And the operating system acts like a translator: enabling the computer's hardware and software to talk to 'foreign' hardware such as printers, scanners and mice. It also allows the application software to 'talk' to the computer hardware. The fetch decode and execute cycle is used with the operating system to control programs and such by the CPU fetching a program from Main Memory decoding it so it can be run by the computer. The computer then starts running the program and it then fetches more of the code and brings it to be run then it does this until the program is closed. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Computer Science section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Computer Science essays

  1. Peer reviewed

    Principles of Computer Networks

    3 star(s)

    When a client configured by DHCP connects to the network it automatically sends a broadcast query asking for the required information to the DHCP server. The IP address and information about the client configuration such as the gateway, domain name & etc, is all managed by the DHCP server.

  2. Control Unit, Memory Unit, and Arithmetic Logic Unit. The CPU or Central Processing ...

    ==> Cache It is provided in computer systems to speed up processing and like all memory it is measured in bytes. Programs are made up of instructions. These are fetched from memory using the fetch-decode-execute cycle. The data that instructions need is also fetched from memory and some data might need to be fetched over and over again.

  1. Smart Card System

    The team is required to pick up this new programming language within a short period of time to complete the project. In order to solve the problems, the team needs to study more about this programming language, do more researches from various resources. For instance, the reference books, Internet etc.

  2. Computer Architecture

    Data Buses - the mechanism that moves information around a computer. 5. Address Buffer - this holds the address part of the instruction register, 6. Program Counter - this contains the location of the next instruction to be executed and, therefore, keeps track of where the computer is up to in a program.

  1. Fetch Decode and Execute

    Say for example the data that we fetched was the ASCII value (hexadecimal) of A, this would then be translated into the letter A. Execute: Once the above steps have been completed the processor is ready to execute the command.

  2. Flexible Architectures in Communication Security Application

    The latencies are: ALU 1 cycle, MULT 7 cycles, Integer DIV 12 cycles, FP Adder 2 cycles, FP Mult 4 cycles, and FP DIV 12 cycles. All functional units, except the divide units, are fully pipelined allowing a new instruction to initiate execution each cycle.

  1. CP3 - Proposed Solution to a Realistic Problem - Apartment Administration software

    Spreadsheet software Spreadsheets are used for insertion and analyses of numerical data, they are good for creating charts and graphs to represent data input. It is possible to store alphabetic data, but you cannot really do much with it - usually used just for headings of columns and cells.

  2. Creating a computer system for Wooten Basset Rugby Club

    * Create leagues of the club's leading scorers and those with the worst disciplinary records. * Store data about what type of training each player is on. For example some players may have fitness training or others forwards training. * Monitor finances for each fixture.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work