Computer Architecture and Organization
1) Half adder is an example of ? a. Combinational Circuits b. Sequential Circuits c. Asynchronous Circuits d. None of these Answer = A Explanation: Combinational circuits are the circuits whose output depends on the inputs of the same instant of time. 2) In JK flip flop same input, i.e at a particular time…
Q.91 A ___________development system and an ______are essential tools for writing large assembly language programs. Ans: Microprocessor, assembler Q.92 In an operation performed by the ALU, carry bit is set to 1 if the end carry C8 is ________. It is cleared to 0 (zero) if the carry is ______ …
Q.76 An interface that provides I/O transfer of data directly to and form the memory unit and peripheral is termed as (A) DDA. (B) Serial interface. (C) BR. (D) DMA. Ans: D Q.77 The 2s compliment form (Use 6 bit word) of the number 1010 is (A) 111100. (B) 110110….
Q.61 A flip-flop is a binary cell capable of storing information of (A) One bit (B) Byte (C) Zero bit (D) Eight bit Ans: A Q.62 The operation executed on data stored in registers is called (A) Macro-operation (B) Micro-operation (C) Bit-operation (D) Byte-operation Ans:…
Q.46 Translation from symbolic program into Binary is done in (A) Two passes. (B) Directly (C) Three passes. (D) Four passes. Ans: A Q.47 A floating point number that has a O in the MSB of mantissa is said to have (A) Overflow (B) Underflow (C) Important…
Q.31 Logic X-OR operation of (4ACO)_H & (B53F)_H results _=Base (A) AACB (B) 0000 (C) FFFF (D) ABCD Ans: C Q.32 When CPU is executing a Program that is part of the Operating System, it is said to be in (A) Interrupt mode (B) System mode (C) Half mode (D) Simplex mode …
Q.16 The addressing mode used in an instruction of the form ADD X Y, is (A) Absolute (B) indirect (C) index (D) none of these Ans: C Q.17 If memory access takes 20 ns with cache and 110 ns with out it, then the ratio ( cache uses a 10 ns…
Q.1 In Reverse Polish notation, expression A*B+C*D is written as (A) AB*CD*+ (B) A*BCD*+ (C) AB*CD+* (D) A*B*CD+ Ans: A Q.2 SIMD represents an organization that ______________. (A) refers to a computer system capable of processing several programs at the same time. (B) represents organization of single computer…
Q. What is the main difference between 16 bit and 32 bit versions of C/C++ while using in line assembler. Ans The 32-bit applications are written using Microsoft Visual C/C++ for windows and the 16-bit applications are written using Microsoft C/C++ for DOS. The main difference is that Visual C/C++ for windows is more common…
Q. Discuss the role of a bus arbiter in a multiprocessor configuration. Ans, Bus arbiter: Which functions to resolve priority between bus masters and allows only one device at a time to access the shared bus. The 8289 bus arbiter controls the interface of a bus master to a shared bus. This is designed to…