Computing Is A Hard Subject. True Or Not

Computing Revision Notes

Kerry McLaughlin 12B

Fundamentals of a Computer System


Computer systems can take an input and process it. The results of the processing are shown as outputs. They store data for later use.

Input - a device that allows a user to enter information into the computer system. E.g. microphone, webcam, keyboard, scanner mouse, sensors, barcode reader.

Process - this is where the data inputted is used to convert the input into a readable form. E.g. search database to find product details and calculate price.

Output - a device that allows a user to extract information from the computer ...

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OUTPUT
STORAGE
PoS (Point of Sale)
Bar code scanner
Cash register screen
Magnetic Stripe
CCTV System
Joystick
Screen
Hard Drive/DVD
Automatic Lighting System
Motion Sensor
Lights
Hard Drive

Computer systems are used in almost every aspect of our lives. They are important in society and make everyday tasks easier.

Business - teleworking, videoconferencing, cloud computing, collaborative working, website creation and online sales.

Entertainment - smartphones, laptop, tablet, netbook, DVD player, computer games and online shopping.

In the home - washing machine, dishwasher, central heating control, burglar alarm, security camera and lighting.

Hardware

The Central Processing Unit

Purpose:

The Central Processing Unit (CPU) is the brain of the computer where the processing of instructions takes place.

The CPU has three main parts:

The Arithmetic Logic Unit (ALU) which performs arithmetic and ...

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Computing Is A Hard Subject. True Or Not. (2018, March 11). Retrieved June 18, 2018, from http://www.essayworld.com/essays/Computing-Is-Hard-Subject-True-Not/106681
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PAPER DETAILS
Added: 3/11/2018 04:28:10 PM
Submitted By: kerrymcl34
Category: Computers
Type: Free Paper
Words: 1047
Pages: 4

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