1. CPU and Embedded Systems
Make a new PowerPoint with 1 SLIDE ONLY
Then… write the keywords in a bullet pointed list that’s Size 11 font.
Keywords
Processor, MHz, GHz, Hertz, Instruction, Execute, Embedded System, Clock Speed, Cache, Core.
Systems Architecture
CPU and Embedded Systems

2. Processor Power Objectives Question: How is the power measured?
BEGINNER: Describe the purpose and state the function of a CPU.
ADVANCED:
Explain common characteristics of a CPU and how they effect performance.
EXPERT:
State the purpose of embedded systems and give examples.
Can you find the processing power for the following items:
Starter activity
iPhone7
iPad Air
Desktop/Laptop
Question: How is the power measured?
Can you compare all of the devices?

3. Processor Purpose What is the purpose of the processor?
Objectives
BEGINNER: Describe the purpose and state the function of a CPU.
ADVANCED:
Explain common characteristics of a CPU and how they effect performance.
EXPERT:
State the purpose of embedded systems and give examples.
What is the purpose of the processor?
The processor is “the brains of a Computer System”
It Processes Data
Carries out instructions (Executes Them)
Processors have a Clock speed measured in Hertz (Number of Cycles Per Second)
Can you explain the following terms:
Starter activity
Processor Speed
Cores
Cache Size
How do the above affect performance?

4. Processor Power Objectives Processor Speed Cores Cache Size
BEGINNER: Describe the purpose and state the function of a CPU.
ADVANCED:
Explain common characteristics of a CPU and how they effect performance.
EXPERT:
State the purpose of embedded systems and give examples.
Processor Speed
Measured in Hertz (Hz), Typical Speeds have spanned across MHz and GHz, 1GHz Processor executes 1 Billion Instructions per second and 2GHz Processor executes 2 Billion Instructions Per Second.
Doubling the clock speed will double the number of instructions executed per second.
Cores
Each processor has a “core” in which instructions are executed. Processors can be multi-core (Dual Core, Quad Core, 8 Core). Each core executes instructions independently.
Quadrupling the number of cores may quadruple the number of instructions executed per second.
Starter activity
Cache Size
Cache is very fast, and usually a very small amount of memory on the processor chip. It acts as an intermediary between the processor and the Main Memory. As programs are executing – the Cache holds commonly used instructions.
Increasing the cache size will reduce the number of memory to disk transfers and thus may speed up processing of these instructions.

5. Embedded Systems Objectives What is an embedded system?
BEGINNER: Describe the purpose and state the function of a CPU.
ADVANCED:
Explain common characteristics of a CPU and how they effect performance.
EXPERT:
State the purpose of embedded systems and give examples.
What is an embedded system?
A computer System that is made up of both Hardware and Software, often known as Firmware. It’s usually for very specialised tasks and doesn’t usually contain an operating system. An example is a dishwasher.
1. Produce a list of embedded systems found around the home.
Starter activity
Would you ever need to write a proper program for these? Why do you think that we have embedded systems? What are the benefits and drawbacks of embedded systems?