Chapter 9 8-BIT SUPPORT DEVICES MCQs 4 min Score: 0 Attempted: 0/4 Subscribe 1. DMA is the abbreviation of ----------------- (A) Discrete memory access (B) Double memory access (C) None of all (D) Direct memory accessShow All Answers 2. 8255 is a -------------------- (A) Programmable Peripheral Interface (B) Programmable interrupt controller (C) Programmable Keyboard/Display Interface (D) Programmable Interval TimerShow All Answers 3. In 8255, -------- mode provides simple input and output operations for each of the three ports. (A) Mode-2 (B) Mode-1 (C) Mode-0 (D) None of allShow All Answers 4. The data bus of 8255 is --------- bit. (A) 16 (B) 8 (C) 4 (D) 2Show All Answers
