1. Part 2 Q6 to Q10 of National 5 Prelim
Revision
Part 2
Q6 to Q10 of National 5 Prelim

2. Revision Part 2 6
Identify the translator used in the development stage of a program? 1 7
Identify the translator used to produce the customers program? 8
Identify the three main parts of a processor and describe their function. 3 9
Identify the 3 buses of a processor and describe their function. 10
Identify and explain a security precaution used to keep data secure. 2

3. Revision Part 2
6. Identify the translator used in the development stage of a program? (1) Interpreter

4. Revision Part 2
7. Identify the translator used to produce the customers program? (1) Compiler

5. Revision Part 2
8. Identify the three main parts of a processor and describe their function. (3) ALU = Arithmetic Logic Unit = performs all the calculations, makes decisions based on logic (AND, OR, NOT). CU = Control Unit = Controls the movement of data to and from the processor. REGISTERS = Temporary storage location for data/instructions the processor is currently executing.

6. Revision Part 2
9. Identify the 3 buses of a processor and describe their function. (3) Address Bus = Holds the location of the data. Data Bus = Transfers the data between the memory and the processor. Control Bus = Handles the control signals (write/read)

7. Revision Part 2
10. Identify and explain a security precaution used to keep data secure. (2) Firewall Encryption Username & Password