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1. Name the parts of the CPU that perform the following functions:

   1. carries out arithmetic and logical computations ..................
   2. stores data within the CPU itself ..................
   3. coordinates the activities of the CPU and computer ..................

2. The CPU consists of integrated circuits in the .................. of a computer.

3. The CPU is responsible for .................. information and controlling the computer.

4. In the CPU are the .................., which manages the execution of the instructions, and the .................., which performs mathematical and logical computations.

5. In the CPU are storage locations called ...................

6. One of these is the program .................. which contains the location of the current instructions.

7. The CPU communicates with other components such as memory through bundles of signal wires called ...................

processing buses
microprocessor
registers
control unit
counter
ALU

Fetch execute cycle

• Instructions and data are stored in ..................

• A register called the .................. holds address of the next instruction to be ..................

• This is transmitted through the ...................

• The instruction is .................. by the .................. and passed to the .................., which carries out the instruction.

RAM
data bus
program counter
arithmetic and logic unit
executed
decoded
control unit

CPU Performance

1. To increase the speed of a computer, users often increase the clock frequency, what is this called?

2. A user who increased the clock frequency noticed the computer is noisier, why?

3. The main reason why manufacturers are finding it difficult to produce faster microprocessors is?

4. What is meant by "quad-core" and how does it improve the performance of the computer?

5. Explain how using cache memory also improves the performance.

Embedded systems

1. Explain what is meant by an "embedded system"

2. List three devices that contain embedded systems.

Final

1. State the roles of the following in the fetch-execute cycle:

   1. The program counter ............................................................................
   2. The address bus ............................................................................
   3. The data bus ............................................................................

2. A new laptop with 1.6GHz dual-core CPU and 512KB Level 1 cache, describe what is meant by:

   1. 1.6GHz CPU ............................................................................
   2. dual-core CPU ............................................................................
   3. L! cache ............................................................................