Year 8 Computer Systems Lesson 2

What is a computer? Rearrange the following into the correct order.

• A computer is the combination of

• hardware and software that can

• take a set of inputs, process

• them and create a set of outputs.

Which of the devices below are example of input devices?

• Printer

• Motion Sensor

• Speakers

• Microphone

Hardware is the physical parts of a computer system. (a)  

• True
• False

Smart Phones and Tablets have touch screens. Is a touch screen an example of an input device or an output device?

• A touch screen is an input device

• A touch screen is an output device

• A touch screen is both an input and an output device

• A touch screen is neither an input or an output device

Which of the following would be the process stage for a retina ( eye ) scanner used on a security door to protect a bank vault?

• Scans the users eye and sends a photo of it to the computer

• Open a locked door if the eye was on record and the user has permission

• Uses the image of the users eye and compares it to those already stored

• Creates an account for the user that will give them access to the locked room

Which of the following if an output device that a self-service checkout would need?

• Scales to measure the weight of items being bought

• Number pad to enter the pin number when paying

• Camera to film the customer to make sure they are not stealing

• Light to alter a member of staff that something on the check out is not working

All sensors are examples of input devices.

• True

• False

What happens at the process stage of the computer system.

• Information from the real world is captured

• Information is sent from a computer system back to the user

• Information is used and checked in some way

Is it possible to have an output in a computer system without anything being processed? Answer yes or no, and justify your answer.

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Is it possible for a computer system to have multiple input and output devices?

• Yes

• No