d) copy the accumulator to the contents of memory whose address is in R1. ... Control address register. Ideal for students preparing for semester exams, GATE, IES, PSUs, … Join our social networks below and stay updated with latest contests, videos, internships and jobs! a) F000 H b) E001 H c) E000 H d) F001 H. Ans: Option c) 4. This Microcontroller Test contains around 20 questions of multiple choice with 4 options. View Answer, 6. The configuration, in which no difference between memory and I/O devices is seen by the CPU, is referred to as _____. View Answer. It contains the address of the memory block to be read or written to. d) RET b) Status Size of memory address space depends on the address bus size. Address c. Counter d. 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View Answer, 4. d) IR b) Address Register ... which during execution reads a 32-bit word from memory and stores it in a 32-bit register. Immediate addressing . c) MUL C, D A. is a hardware memory device which denotes the location of the current instruction being executed. C. contains the address of the memory location that is to be read from or stored into. In post-indexing the contents of the address field are used to access a memory location containing a___ address: a. In other words, This register is used to access data and instructions from memory during the execution phase of instruction. What kind of a flag is the sign flag? This register is user inaccessible. d) register size b. The processor accesses register faster than the memory. Microcontroller MCQ Quiz & Online Test: Below is few Microcontroller MCQ test that checks your basic knowledge of Microcontroller. These computer memory questions and answers are very important for bank exams and other competitive exams. This contains 20 Multiple Choice Questions for Computer Science Engineering (CSE) Machine Instructions And Addressing Modes - MCQ Quiz - 1 (mcq) to study with solutions a complete question bank. The data at memory location 7100 is A7H. D. Access register. Computers registers are accumulator register, program counter, instruction register, address register, etc. The instruction being read from memory using the address placed in the PC and then is placed in the IF/ID pipeline register in, a. Instruction Fetch stage: b. Instruction Decode stage: c. Execution: d. Memory Access 21. Opcode indicates the operations to be performed. _____ address of the operand calculated during the prior cycle is used to access memory. a) STA 16-bit address b) Registers On power up register bank 0 is selected which has memory address from 00H-07H. Multiple choice questions and answers (MCQ) based on the various addressing modes of the 8086 microprocessor with 4 choices, correct answer and explanation. LXI H,7100H MOV A, M CMA INR A STA 7101H HLT . Almost all departments … You can choose which recycle bin to use to store your deleted files, C. You can make any one of them default recycle bin, A. Computer Science MCQ (Multiple Choice Questions) ... Invalidation writes only to_____ and erases previously residing address in memory: a. Folders. c. Push operation. Which of the following is not a visible register? 56. 55. The communication between the components in a microcomputer takes place via the address and (A) I/O bus (B) Data bus (C) Address bus Practice these MCQ questions and answers for preparation of various competitive and entrance exams. The Register ranges from 32-bits register to 64-bits register whereas, the memory capacity ranges from some GB to some TB. Submitted by: Rashid Mehmood. c) JMP 2000h View Answer, 7. Which of the following registers is used to keep track of address of the memory location where the next instruction is located? View Answer, 8. Solution: 134. B. is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory. ... (higher-order address lines) while executing “IN 8-bit port address” instruction are. View Answer, 10. Page 6 a) 1 b) ADD A, B Memory Organization MCQs: This section focuses on "Memory Organization" of Computer Organization & Architecture. Content address register. Which of the following is a data transfer instruction? less than equal to greater than none of the mentioned OS Memory Management MCQ at … CPU has built-in ability to execute a particular set of machine instructions, called as __________ b) 11 View Answer, 9. b. Stack pointer. a) MOV 2000h 26. The Memory Address Register A. is a hardware memory device which denotes the location of the current instruction being executed. c) Sequence Set b. The register which holds the information about the nature of results of arithmetic and logic operations is called as. a) True b) MBR c) compatible The MAR or address buffer also stores the address that references memory. What is correct instruction if you want the control to go to the location 2000h? This register directly drives the address bus and the memory address decoder in RAM or ROM. New CPU whose instruction set includes the instruction set of its predecessor CPU is said to be ___________ with its predecessor. MAR (Memory Address Register) The memory address register is the CPU registers, which either stores the memory address from which the data will be fetched from the CPU. 4. is a hardware memory device which denotes the location of the current instruction being executed. Microprocessor and microcontroller multiple choice questions and answers on Microprocessor 8086 mcq quiz on microprocessor and microcontroller objective type questions with answers to prepare for interviews and various competitive exams. 2. How is the effective address of base-register calculated? A. The total external data memory that can be interfaced to the 8051 is a) 32K b) 64K c) 128K d) 256K. Memory address register. all bits reset (i.e. c. Condition accumulator resource. d. Files. a) General Purpose Registers In a computer, the memory address register (MAR) is the CPU register that either stores the memory address from which data will be fetched to the CPU, or the address to which data will be sent and stored.. © 2011-2021 Sanfoundry. Virtual memory is – (1) an extremely large main memory (2) an extremely large secondary memory (3) an illusion of an extremely large memory (4) a type of memory used in super computers (5) None of these Ans- B 22. B. 168. d) Instruction MAR holds the memory location of data … A. The contents of the program counter is the _____ of the instruction to be run: a. 1. c) Address 220 = 1048576 = 1 MB. a) word limit 25. c. Directory. Q9. Data b. This set of Computer Fundamentals Multiple Choice Questions & Answers (MCQs) focuses on “Registers”. Computer Mcqs. In stack organization address register is known as the: a. The number of sign bits in a 32-bit IEEE format __________ Statement 2: The SP register is 16-bit wide and points to location 07H when we start the 8051. Multiple choice questions on Computer Architecture topic 8085 Microprocessor. Memory stack. 3. It is one of the registers located in the computer’s processor. Related Content: Fetch Execute CycleVon Neumann Architecture b. B. Submitted by Monika Sharma, on September 01, 2019 . The Memory Address Register (MAR) holds the memory location of data that needs to be accessed. Computer Fundamental MCQs, Computer MCQs , MS Office, MS Excel, MS Word, MCQ on Internet, MCQ Quiz KPPSc MCQs, MCQ of Computer Science, NTS GAT, Computer has become most demand able thing in any work. With relocation and limit registers, each logical address must be _______ the limit register. Q9. Q8. Explanation: MAR or the memory address register is not a visible register. Memory unit B. Memory-mapped I/O C. Memory address register D. Memory unit. D. Memory Address Register. D. contains a copy of the designated memory location specified by the MAR after a "read" or the new contents of the memory prior to a "write". You can find deleted files in recycle bin, B. The length of a register is called _______ d) RET 2000h You can restore any files in recycle bin if you ever need, C. You can increase free space of disk by sending files in recycle bin, D. You can right click and choose Empty Recycle Bin to clean it at once, If the displayed system time and date is wrong, you can reset it using, More Related Questions on Operating System. To practice all areas of Computer Fundamentals, here is complete set of 1000+ Multiple Choice Questions and Answers. c) register limit The _________ holds the contents of the accessed memory word. Question 1: You are given the following instruction: Here I am sharing various types of mcq on computer memory because many students are confused to solve multiple choice questions on computer in the examination. The test carries questions on topics such as Microprocessor Organization, CPU as a Micro-Processor, Memory Cycle in Micro-processor, Microprocessor Sequencing, Instruction Set of Micro-processor, Addressing Modes, Memory Stack & Subroutines etc. View Answer: Answer: Option B. b) word size Memory. B. is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory. View Answer, 2. It is an 8-bit register, which holds the temporary data of arithmetic and logical operations. View Answer, 5. a) Instruction Set You can set different size for each recycle bin, B. Memory register and write c. Data register and read d. Address register and read 18. c) PC d) backward compatible C. Memory D. Vector register. Statement 1: 8051 can use 16-bit address lines to interface with external memory. Participate in the Sanfoundry Certification contest to get free Certificate of Merit. By addition of implied register contents to the partial address in instruction c. By addition of index register contents to the complete address … This section contains more frequently asked Microprocessors 8086 Fundamental MCQs which are randomly compiled from various reference books and Questions papers for those who are preparing for the various University Level and Competitive Examinations. a) Memory Address Register b) Memory Data Register c) Instruction Register d) Program Counter e) None of the above View Answer, 3. Set 4 - Basic Electronics Engineering Test Questions. C. Memory data register. Memory register and read b. 6.7).The MAR can also be loaded with an address that is used to access data words stored in memory. An alternate function of port pin P3.4 in the 8051 is a) Timer 0 b) Timer 1 c) interrupt 0 d) interrupt 1. You have to select the right answer to a question. ... Computer Science MCQ, UGC Net MCQ Computer Science MCQ, UGC Net MCQ ... To practice all areas of Computer Fundamentals, here is complete set of … d) MAR [Stack pointer] [page table base register] [page register] [program counter] 7 people answered this MCQ question page table base register is the answer among Stack pointer,page table base register,page register,program counter for the mcq The address of a page table in memory … The address space of the 8051 is divided into four distinct area such as internal data, external data, internal code, and external code. d) User instructions A register which holds the data being written into or read out of the addressed memory location. d) 23 1. a. irrelevant. b) forward compatible In other words, the memory address register holds the memory location of data that needs to be accessed. 3. the address generated by CPU is: A. absolute address B. logical address C. physical address D. mac address E. both a and b F. None of these Answer B. Q7. the_____ and sends_____ request to memory: a. a) fully compatible Mcq Added by: Rashid Mehmood. The Memory Address Register? c) Status Register The load instruction is mostly used to designate a transfer from memory to a processor register known as (A) Accumulator (B) Instruction Register (C) Program counter (D) Memory address Register. b) MOV A, 2000h Ans: A. a) MAR A microprocessor is capable of addressing 64 K bytes of memory. Following is the list of multiple choice questions in this brand new series: MCQ in Computer Fundamentals. Sanfoundry Global Education & Learning Series – Computer Fundamentals. b) False To retrieve a … C. contains the address of the memory location that is to be read from or stored into. If there are multiple recycle bin for a hard disk, A. The MAR gets input from the PC when an instruction is to be accessed (see Fig. a) General Purpose Which of the above statements is/are true? All Rights Reserved. A. —– is called a memory buffer and it is used to contain a speed differential A. cache B. accumulator C. disk buffer D. stack pointer E. both a and b F. None of these Answer A. c) 9 The memory address of last location of an 8 KB memory chip is FFFF H. Find the starting address. Q3. By addition of index register contents to the partial address in instruction b.