How Computers work

The CPU is often refered to as

• The heart of the computer
• The brains of the computer
• The main part of the computer
• The memory of the computer

During the 'fetch' stage, the CPU…

• Fetches data from the keyboard
• Fetches date and instructions form the hard disk
• Fetches data and instructions from main memory
• Fetches data from the memory stick

When the CPU fetches data, it makes use of a hardware path called a…

• Route
• Channel
• Coach
• Bus

During the 'decode' part of the processing cycle the CPU…

• Decodes the data from the hard disk
• Decodes the instruction that has just been fetched
• Stores the instruction it has just fetched
• Codes the instruction it has just fetched

The 'control unit' is part of the CPU

• true
• false

The control unit controls the input and output of data so that the signals go to the right place at the right time

• true
• false

The control unit controls the flow of data in the CPU

• true
• false

The CPU clock speed is measured in cycles per hour

• true
• false

A CPU which is able to carry out five billion instructions per second would have a clock speed running at…

• 5GHz
• 5MHz
• 5KHz
• 5MB

With every tick of its internal clock, a CPU is able to process one piece of data or execute one instruction

• true
• false