MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Complex Instruction Set Computer (CISC) and Reduced Instruction Set Computer (RISC) are the two major approaches to processor architecture. CISC processors have a single processing unit, external memory, and a small register set with hundreds of different instructions.

Detailed explanation-2: -The von Neumann architecture-also known as the von Neumann model or Princeton architecture-is a computer architecture based on a 1945 description by John von Neumann, and by others, in the First Draft of a Report on the EDVAC.

Detailed explanation-3: -Most current computers are based on the Von Neumann design, which has been extremely successful. Any PC’s CPU chip has a control unit and an arithmetic logic unit (and some local memory), while the primary memory is stored on the motherboard in the form of RAM sticks.

Detailed explanation-4: -Current instruction register (CIR)-holds the instruction that is currently being decoded and executed. Accumulator (ACC)-holds the data being processed and the results of processing.