1. Assessment Covering… Von Neuman architecture Registers – purpose and use, the fetch execute cycle

2. Question 1 Question (4 marks) … Label the 4 components of the Von Neumann Architecture I/O Processor Main Memory System Bus 4 marks

3. Question 2 Answer… ROM stands for Read Only Memory and this means the data stored in the ROM can only be read and therefore not edited. ROM stores all of the boot up code like the operating system and is not cleared when the PC shuts down. RAM stands for Random Access Memo, this type of memory can be edited and it stores data relevant to all of the current programs that are running, however RAM is cleared when the PC shuts down. Question (4 marks) … What is the difference between ROM and RAM and what do they stand for? 4 marks

4. Question 3 Answer… Question (6 marks) … Complete the following table: NameDirectionDescription Address BusUni-Directional Send the address of the data being sent or required Data BusUni-Directional bi Sends data of the current instructions being worked out. Can be used for sending data to processor to be processed Control BusBi-Directional Sends signals telling the processor and I/O devices what to do. 2 marks3 marks

5. Question 4 Answer… Width 4 wires; 4 15 Width 6 wires; 6 63 Width 10 wires; 10 1023 Question (3 marks) … What is the largest number the following width data buses can carry at one time: Width 4 wires Width 6 wires Width 10 wires 0 marks

6. Question 5 Answer… Input: Mouse, Keyboard and Microphone Output: Monitor, Headphones and Projectors Both: Touch Screen and Gaming Headset (With Mic and Speaker) Question (8 marks) … Name 3 input peripherals and 3 output peripherals and 2 that could be both… 8 marks

7. Question 6 Answer… USB stick, External Hard drive, SSD Card Question (3 marks) … Name 3 secondary storage devices… 2 marks

8. Question 7 Answer… An I/O controller is Question (2 marks) … Name two I/O controllers 0 marks f o r s e n b o y s

9. Question 8 Answer… The Stored Program Concept works around programs that are stored while the PC is running/ Currently active programs. In RAM. Must be fetched Question (2 marks) … Define the stored program concept: 1 marks

10. Question 9 Answer… ALU stands for Arithmetic Logic Unit and it performs of the logic/calculation based instructions that are sent to the processor from the data bus Question (2 marks) … What does the ALU stand for and give a description of its function. 2 marks

11. Question 10 Answer… 3.4 MHz means 3.4 Million Hertz per second so 3,400,000 hertz per second Question (2 marks) … What does 3.4MHz mean? 1 marks

12. Question 11 Answer… Registers are quick short term memory used for storing information required for calculations currently in progress. They contain extremely fast memory Question (2 marks) … What are registers:? 2 marks

13. Question 12 Answer… Program Counter(PC): Counts the amount of programs currently running. (CIR) (MIR) – Memory ….. Register (MDR)- Memory Data Register Question (8 marks) … Name 4 registers used by the processor and explain what each does: 3 marks

14. Question 14 Answer… Increasing clock speed means your processor has to work a lot quicker than it usually would. This mean its gets a lot hotter and so the processor requires extra cooling else the PC could over heat. The term used for increasing clock speed is Overclocking as you are forcing the processor to work faster than it was made for. This can be incredibly risky and can damage your PC. Question (2 marks) … What draw back might increasing clock speed bring? 2 marks

15. Question 15 Answer… The instruction set is the amount of instructions that the CPU is able to understand and this can limit what the CPU is able to do. Question (2 marks) … What is the instruction set: 1 marks

16. Question 16 Answer… 4 bit opcode could understand 16 different instructions. The largest number that could be used as data would be 63 Question (2 marks) … For a word with 4 bits for an opcode and 6 bits for an operand How many different instructions could I fit into the instruction set? What is the largest number that I could use as data? 1 marks

17. Question 17 Answer… LOAD #34 ADD #35 STORE 100 Question (3 marks) … Using the LOAD / ADD / STORE instructions Write some assembly code to 34 + 35 put in memory location 100

18. Question 18 CIR can be populated by a greater variety of instructions than the CISE Question (1 marks) … What effect will having a RISC or CISC have on the contents of the CIR?

19. SCOR E 39/ 56 This sure is heavy….