Computer Science (from 2021) 9618: Hardware and Virtual Machines Topical Past Paper Questions

(a) The Karnaugh map (K-map) represents a logic circuit with four inputs. (i) Draw loop(s) around appropriate group(s) in the K-map to produce an optimal sum-of-products. [2] (ii) Write the Boolean expression from your answer to $ 6(a)(i) $ as a simplified sum-of-products. Do not…

The table shows assembly language instructions for a processor that has one register, the Accumulator (ACC). The current contents of memory are: Write assembly language code, using only the given instruction set to: store the denary value 250 as labelled variable x store the valu…

A memory buffer uses Dynamic RAM (DRAM). (a) Identify two differences between DRAM and Static RAM (SRAM). (b) Explain how a memory buffer is used when a computer is transferring data to its magnetic hard disk drive. [4]