Computer Systems

What is a general purpose computer designed to do?

• Perform a single task very efficiently

• Carry out a wide range of purposes, e.g. Word Processing, Games, Web Browsing.

• Handle requests sent from other computers.

• Perform any tasks the user requires.

Which of the following is NOT an example of a general purpose computer?

• Weather station

• Tablet

• PC

• Smartphone

What does CPU stand for?

• Central Processing Unit

• Computer Processing Unit

• Central Performance Unit

• Control Processing Unit

What is the role of the CPU in a computer?

• Control other components of the computer.

• To carry out instructions.

• To permanently store data.

• To store data about currently running programs.

A 3.8 GHz CPU can perform ​ (a)   actions per second.

• 3.8 billion
• 3.8 million
• 3,800
• 3.8 trillion

What type of memory is used for long-term storage of programs and data?

• Secondary storage

• Cache memory

• RAM

• Primary memory

​ (a)   memory will lose its content when the power is switched off.

​ (b)   memory on the other hand will retain its content when the power is switched off.

• Volatile
• Non-volatile

​ (a)   systems are built into ​ (b)   systems.

They have ​ (c)   specific role.

A good example is ​ (d)   in a car.

• automatic headlights
• Embedded
• larger
• one
• more than one
• smaller

Why is it important to move data and instructions for programs we want to run into RAM?

• The CPU can access instructions and data from RAM much faster than from secondary storage.

• Instructions and data are stored in the wrong format in secondary storage.

• The data in secondary storage is not permanent.

• All of these

What type of memory do these statements describe?

Groups:

(a) RAM

,

(b) ROM

• Short for Random Access Memory

• Non-Volatile

• Can only be read from.

• Can be written to and read from.

• Stores currently running programs.

• Volatile

• Stores boot up instructions for the computer.

• Short for Read Only Memory