Information Systems Audit
Chapter notes, video classes, MCQ practice tests and quick-revision one-liners for Information Technology and Digital Banking (Elective) — CAIIB.
One-liners from this chapter
Free sample — 8 of 143 rapid-fire Q&A cards.
What is COMPUTER?
is often expanded as "Commonly Operated Machine used in Technical and Educational Research".
What is CPU?
is the single most-tested item from this chapter.
Arithmetic Logic Unit (ALU)?
the part that actually does arithmetic (+, −, ×, ÷) and logic (AND, OR, NOT, XOR, comparisons). It receives operands from registers, performs the operation in hardware and writes the result back to a register.
Control Unit (CU)?
the traffic policeman of the CPU. It fetches instructions from memory, decodes them, generates the timing & control signals, and tells the ALU/registers/memory/I-O exactly what to do, in what sequence.
Memory / Register Unit?
a small set of ultra-fast on-CPU storage cells (registers) that hold the operands the ALU is currently working with, the address of the next instruction (the Program Counter, PC), the current instruction (the Instruction Register, IR), the status flags etc.
Store — held numbers, fed data & intermediate results?
Memory / RAM
Mill (Arithmetic Unit) — performed arithmetic operations?
ALU
Control — checked sequence of operations?
Control Unit
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