10GradeClass6

IB
Class 6 Computer systems
Hardware

Learning Objectives 23/08

What are we learning?

•Explain factors affecting CPU performance.

•Clock Speed

•Cache Size

•Number of Cores

•RAM, ROM and Virtual Memory – understanding of differences between volatile and non-volatile memory.

•Explain factors affecting secondary storage.

•Cost

•Capacity

•Speed

•Portability

•Understand the Fetch – Execute Cycle.

Part 1. The central Processing Unit (CPU)

Multiple Choice

What is the main function of the CPU?

• To carry out processing of the data.
• To help with playing games.
• To fetch instructions from memory, decode them and execute the instructions.
• To heat up the computer.

Multiple Choice

What three things happen in the CPU?

• Get, Calculate, Output

• Fetch, Decode, Execute

• Input, Process, Send

• Input, Calculate, Implement

The Central Processing Unit (CPU)

•Located on the motherboard, the Central Processing Unit, or CPU, is regarded as the brains of a computer.

•This is where all user commands are sent and where instructions and calculations are executed.

•The CPU contains several key components:

•Control Unit

•Arithmetic & Logic Unit

•Cache Memory

•Registers

Multiple Choice

Which of the following is a job of the control unit?

• To start up the computer

• To manage the fetch decode execute cycle

• To create presentations

• To carry out calculation

Multiple Choice

Where does the CPU live?

• Daddyboard

• RAM

• Cloud

• Motherboard

Multiple Choice

Which unit of time is clock speed measured in?

• Cycles per minute

• Cycles per second

• Cycles per hour

• Cycles per week

Multiple Choice

In a processor, a core is

• A type of RAM
• A single processor which can fetch and decode instructions
• The middle part of the CPU
• A type of secondary storage

Multiple Choice

Binary data is written as

• all number between 0 and 9

• 0 and 1 digits only

• text only, no special charachters

• images

Multiple Choice

A quad core processor has how many cores

• 1
• 2
• 4
• 8

Open Ended

Which of the featured computers has the fastest clock speed?

Which of the featured computers has the most cache memory?

Jasmine wants to purchase the highest performing computer. Which do you recommend and why?

Modern computers are based on a stored-program concept introduced by John Von Neumann. In this stored-program concept, programs and data are stored in a separate storage unit called memories and are treated the same.​

Von Neumann architecture

Multiple Choice

The correct order is

• Fetch, Decode, Execute
• Decode, Execute, Fetch
• Execute, Decode, Fetch
• Decode, Fetch, Execute

Multiple Choice

Match the definition with the step of the Fetch-Decode-Execute cycle.

Instructions are taken from RAM and brought to the CPU.

• Fetch

• Decode

• Execute

Multiple Choice

Match the definition with the step of the Fetch-Decode-Execute cycle.

The instructions are read by the CPU.

• Fetch

• Decode

• Execute