Question

Identify the correct statement ___________________.

• A. IBM PCs used RISC CPU designs
• B. Macintosh used CISC CPU design
• C. IBM used CISC CPU design
• D. None of above is true

Answer 1

The correct option is C IBM used CISC CPU design

IBM used CISC CPU design is the correct statement.

The first (retroactively) RISC-labeled processor (IBM 801 – IBM's Watson Research Center, mid-1970s) was a tightly pipelined simple machine originally intended to be used as an internal microcode kernel, or engine, in CISC designs, but also became the processor that introduced the RISC idea to a somewhat larger public.

A complex instruction set computer (CISC /ˈsɪsk/) is a computer in which single instructions can execute several low-level operations (such as a load from memory, an arithmetic operation, and a memory store) or are capable of multi-step operations or addressing modes within single instructions.