I will explain what the specifications are for an input and output device. I will explain what input devices need to be, to be transferred to the relevant output device.

Authors Avatar

Forhad Hassan

T079693

Leytonstone School

13411

Basic Specifications

I will explain what the specifications are for an input and output device. I will explain what input devices need to be, to be transferred to the relevant output device. Here are the various items I will be looking at:

 

  • Central processing unit
  • Operating system
  • Applications software
  • Configuration.

Control Processing Unit (CPU):

In PC’s and laptops there is a main processing chip called the processor or either wise known as the central processing unit (CPU). This unit handles the instructions from the computer program and processes the data. Here are three items which would be found in the CPU:

  • Control Unit
  • Arithmetic/Logic Unit
  • Main Storage

Control Unit:

The control unit ensures that all the other components, including the input and output devices, carry out their functions efficiently and effectively. The control unit is electronically linked to all the components, so that it will be able to detect if the required device or component is connected and ensure that any required device will be able to carry out instructions. The CPU needs to be able to arrange and display an error message on the visual display unit (VDU/monitor), to alert the operator.

Join now!

Arithmetic/Logic Unit:

In this unit of the CPU, all mathematical calculations like addition, subtraction, multiplication and division, are done in this unit. Data (subject of the calculations), are momentarily, are transferred to the arithmetic/logic unit (ALU). The operations are performed and the answers to the calculations return to the main storage.

The ALU is also used to make ‘Logical’ comparisons, which will mostly determine the route to be taken throughout the program.

Main Storage:

The main storage of the computer stores all of the data, which is going to be processed. All of the data is entered from ...

This is a preview of the whole essay