Info Tech 1

What is a Computer?

• A computer is an electronic device that accepts, processes and stores data for later use

What are the ADVANTAGES OF COMPUTER USE

1. Increased speed with tasks

2. Enhanced storage capacities

3. Enhanced consistency and accuracy

4. Reliable

What are the DISADVANTAGES OF COMPUTER USE

1. Security can be compromised

2. Initial cost is high

• Input

  • The data the computer receives for processing

• Processing

  • The execution of one or more computer programs on the data

• Output

  • The data the computer sends in human-readable form

• Storage

  • The device that holds the data until it is rewritten or deleted

• Embedded device

  • The smallest computing device built into larger electrical systems

• Mobile device

  • A hand held computing with a compact and portable design

• Personal Computer

  • A computing device which is larger than a mobile device but smaller than a desktop system.

• Desktop Computer

  • Larger and more powerful than most laptops and are in stationary form

• Mainframes

  • Used for complex, high performance task with a large storage capacity and a large CPU

• Supercomputer

  • Extremely powerful, high performance computing machine used for demanding tasks

What are PERIPHIAL Devices?

• Peripheral devices are the devices that are located outside the CPU and are controlled by it

What is MAIN MEMORY?

• Main Memory is the component of the computer that holds programs, data and instructions that are currently in use