Computers

What is a computer?

• An electronic device that receives input, processes it and provides an output in the desired format.

• An electronic device to do homework, play video games or surf on the internet.

• An electronic device that receives input, stores or processes the input and provides an output in the desired format.

Typing an essay in Word is an example of input.

• Yes, because you're inserting data into the computer.

• No, because you're not introducing data into the computer.

• I don't know.

Taking a picture with the cell phone is an example of output.

• Yes, because it's the result of processing data.

• No, because it's not the result of processing data.

• I don't know.

Printing a document is an example of output.

• Yes, because it is the result of processing data.

• No, because it's not the result of processing data.

• I don't know.

Listening to audio through the speakers is an example of input.

• Yes, because you're inserting data into the computer.

• No, because you're not inserting data into the computer.

• I don't know.

Is this a valid example of the Input-Process-Output Model?

Input: Scanning picture.

Process: Editing the picture.

Output: Printed poster with picture.

• Yes.

• No.

• I don't know.

Is this a valid example of the Input-Process-Output Model?

Input: Text and numbers typed on keyboard.

Process: Calculations performed in a spreadsheet.

Output: Bank record.

• Yes.

• No.

• I don't know.

Check all the examples of Input Units.

• Keyboard

• Microphone

• Speakers

• Mouse

Check all the examples of Output Units.

• Screen.

• Printer.

• Headphones.

• Keyboard.

The control unit, arithmetic logic unit and memory are together called Central Processing Unit or CPU.

• Yes

• No.

• I don't know.