O-LevelComputer ScienceHardware2210/12 · Oct/Nov 2024 · Q66 Marks
The table contains names and descriptions of components in a central processing unit (CPU). Complete the table by giving the missing component names and descriptions. Component name Description ............................................... sends signals to manage the flow of data through the CPU program counter ............................................... ............................................... stores the address of the data that is about to be fetched from random access memory (RAM) into the CPU ............................................... transmits data between the RAM and the CPU accumulator ............................................... ............................................... stores an instruction when it is being decoded
- Blank 1Identify the component name for 'sends signals to manage the flow of data through the CPU'.[1]
- Blank 2Describe the function of the 'program counter'.[1]
- Blank 3Identify the component name for 'stores the address of the data that is about to be fetched from random access memory (RAM) into the CPU'.[1]
- Blank 4Identify the component name for 'transmits data between the RAM and the CPU'.[1]
- Blank 5Describe the function of the 'accumulator'.[1]
- Blank 6Identify the component name for 'stores an instruction when it is being decoded'.[1]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2024). The mark or mark type is shown in brackets.
- [1] 6: Control unit // CU
- [1] 6: (Program counter) Stores the address of the next instruction to be fetched
- [1] 6: Memory address register // MAR
- [1] 6: Data bus
- [1] 6: (Accumulator) Stores the interim result for a calculation
- [1] 6: Current instruction register // CIR
Write your answer and get it marked
On Oracle Prep you can write or photograph your own answer and have it marked by AI against this mark scheme, with feedback on what you missed.
Sign up free →