Description : In RISC architecture access to registers is made as a block and register file in a particular register can be selected by using: a. Multiplexer b. Decoder c. Subtractor d. Adder
Last Answer : b. Decoder
Description : The device which changes from serial data to parallel data is (A) COUNTER (B) MULTIPLEXER (C) DEMULTIPLEXER (D) FLIP-FLOP
Last Answer : Ans: C The device which changes from serial data to parallel data is demultiplexer. (A demultiplexer takes in data from one line and directs it to any of its N outputs depending on the status of the select inputs.)
Description : The size of the ROM required to build an 8-bit adder/subtractor with mode control, carry input, carry output and two’s complement overflow output is given as
Last Answer : (B) 218 × 10
Description : ROM has a: a) Decoder followed by encoder b) Multiplexer followed by decoder c) Demultiplexer followed by an encoder d) None of the above
Last Answer : Ans: A
Description : A ________ is a repeater. A) regenerator B) ADM C) STS multiplexer/demultiplexer D) none of the above
Last Answer : STS multiplexer/demultiplexer
Description : A device which converts BCD to Seven Segment is called (A) Encoder (B) Decoder (C) Multiplexer (D) Demultiplexer
Last Answer : Ans: B A device which converts BCD to Seven Segment is called DECODER. (A decoder coverts binary words into alphanumeric characters.)
Description : Which of the following is a sequential circuit? (A) Multiplexer (B) Decoder (C) Counter (D) Full adder
Last Answer : (C) Counter
Description : The character U is used to indicate. Undefined transfers Unfair transfers a. b. c. Unconditional transfers d. All of these
Last Answer : c. Unconditional transfers
Description : When a mobile telephone physically moves from one to another cell, the base station transfers ownership to the cell getting strongest signal. This process is known as................. (A) handoff (B) mobile switching (C) mobile routing (D) cell switching
Last Answer : (A) handoff
Description : Which operation are done by increment or decrement the stack pointer: a. Push b. Pop ce. Both d. None
Last Answer : ce. Both
Description : What is the difference between a subtractor and a difference amplifier?
Last Answer : . The difference amplifier multiplies the difference between the two inputs by the gain of the circuit while the subtractor merely subtracts one input signal from the other
Description : Draw and explain the Op-amp based subtractor
Last Answer : Working The subtractor circuit is a basic op-amp circuit whose output voltage is the difference between two input voltages. In the above circuit, the two input voltages are V1 and V2. The op amp is used ... When differential gain is 1, ie Rf = R, the output voltage is Vo = (V2 - V1).
Description : A 1 to 16 demultiplexer has (a) 2 select inputs (c) 4 select inputs, (b) 3 select inputs (d) 8 select inputs
Last Answer : 2ⁿ = 16 nlog 2=log 16 n = log 16/log 2 n = 4 select inputs
Description : isacommand given to a computer to perform a specified operation on some given data. a. Aninstruction b. Command c. Code d. None of these
Last Answer : a. Aninstruction
Description : The instruction fetch operation is initiated by loading the contents of program counter into the and sends _ request to memory: a. Memory register and read b. Memory register and write c. Data register and read d. Address register and read
Last Answer : d. Address register and read
Description : The contents of the program counter isthe __——__—oof the instruction to be run. a. Data b. Address c. Counter d. None of these
Last Answer : b. Address
Description : is a symbolic representation of discrete elements of information: a. Data b. Code c. Address d. Control
Last Answer : b. Code
Description : Which are benefit of input/output interrupt: a. It is an external analogy to exceptions b. The processor initiates and perform all I/O operation c. The data is transferred into the memory through interrupt handler d. = Alllof these
Last Answer : d. = Alllof these
Description : Which are the operation of versatility: a. exchange of information with the outside world via I/O device b. Transfer of data internally with in the central processing unit c. Performs of the basic arithmetic operations d. = Allof these
Last Answer : d. = Allof these
Description : Which is the most important component of a digit computer that interprets the instruction and processes the data contained in computer programs: MU b. ALU c. CPU d. PC
Last Answer : c. CPU
Description : Which are microcomputers commonly used for commercial data processing, desktop publishing and engineering application. a. Digital computer b. Personal computer c. Both d. None of these
Last Answer : b. Personal computer
Description : Which are the operation that a computer performs on data that put in register: a. Register transfer b. Arithmetic c. Logical d. Allof these
Last Answer : d. Allof these
Description : Which operation puts memory address in memory address register and data in DR. a Memory read b. Memory write c Both d. None
Last Answer : b. Memory write
Description : Arithmetic operation are carried by such micro operation on stored numeric data available in a. Register b. Data c. Both d. None
Last Answer : a. Register
Description : Which operation is extremely useful in serial transfer of data: a. Logical micro operation b. Arithmetic micro operation c. Shift micro operation d. None of these
Last Answer : c. Shift micro operation
Description : In register transfer which system is a sequential logic system in which flip-flops and gates are constructed: a. Digital system b. Register Cc. Data d. None
Last Answer : a. Digital system
Description : END of macro definition by: a. NAME b. MEND c. DATA d. MEMORY
Last Answer : b. MEND
Description : Before checking the program for errors in translating code into machine language the high level language code is loaded into __ a. Register b. Memory c. Data d. CPU
Last Answer : b. Memory
Description : If internal subroutine is called global data is used to pass values defining parameters between __ program and defined | a. Main and subroutine b. Local and subroutine c. Global and subroutine d. Global and main
Last Answer : a. Main and subroutine
Description : The processed data is sent for output to standard __ device which by default is computer screen: a. Input b. Output c. Botha &b d. None of these
Last Answer : b. Output
Description : For each micro operation the control unit generates set of_ signals. a. Control b. Address c. Data d. None of these
Last Answer : a. Control
Description : Control memory is part of __ that has addressable storage registers and used as temporary storage for data. a. ROM b. RAM c. CPU d. Memory
Last Answer : b. RAM
Description : Addresses in control memory is made by for each register group: a. Address select logic b. Data select logic c. Control select logic d. All of these
Last Answer : a. Address select logic
Description : What type of circuit is used by control memory to interconnect registers. a. Data routing circuit b. Address routing circuit c. Control routing circuit d. None of the these
Last Answer : a. Data routing circuit
Description : Which memory is used to copy instructions or data currently used by CPU: a. Main memory b. Secondary memory c. Cache memory d. None of these
Last Answer : c. Cache memory
Description : Copy of instruction in cache memory is known as: a Execution cache b. Data cache c. Instruction cache d. Allof these
Last Answer : c. Instruction cache
Description : Copy of data in cache memory is called. a. Datacache b. Execution cache c. Address cache d. Control cache
Last Answer : a. Datacache
Description : In cache memory hit rate indicates. a. Data from requested address is not available b. Data from requested address is available c. Control from requested address is available d. Address from requested address is not available
Last Answer : b. Data from requested address is available
Description : In cache memory miss rate indicates. a. Availability of requested data b. Availability of requested address c. Non-Availability of requested data d. Non-Availability of requested address
Last Answer : c. Non-Availability of requested data
Description : Updating writes to cache data andalsoto___ a. Directories b. Memory c. Registers d. Folders
Last Answer : a. Directories
Description : Various machine level components are: a. Address register > Program counter c Data register d. Accumulator register e. Memory of 2K,16 bits/word RAM f. Multiplexers g. Allof these
Last Answer : g. Allof these
Description : Which functions are performed by CU: a. Data exchange b/w CPU and memory or I/O modules b. External operations c. Internal operations inside CPU d Botha&c
Last Answer : d Botha&c
Description : Which are internal operations inside CPU: a. Data transfer b/w registers b. Instructing ALU to operate data c. Regulation of other internal operations d. All of these
Last Answer : d. All of these
Description : How many paths taken by movement of data in CU: a. 3 b 64 c. 5 d 2
Last Answer : d 2
Description : ___is the data paths link CPU registers with memory or I/O modules. a. External data paths b. Internal data paths c. Boreal data paths d. Exchange data paths
Last Answer : a. External data paths
Description : __is data paths there is movement of data from one register to another or b/w ALU and a register. a. External b. Boreal c. Internal d. Exchange
Last Answer : c. Internal
Description : Outputs of instruction/data path in CU are. a. Reg R/W b. Load/Reg-Reg c. ALU function select d. Load control e. Read control f. IR Latch g. JUMP/Branch/Next PC h_ = All of these
Last Answer : h_ = All of these
Description : Instruction formats contains the memory address of the a. Memory data b. Main memory Cc. CPU d. ALU
Last Answer : b. Main memory
Description : Ininstruction formats the information required by the _ for execution: a. ALU b. CPU Cc. RISC d. DATA
Last Answer : b. CPU
Description : The stack pointer is maintained in a : a. Data b. Register c. Address d. None of these
Last Answer : b. Register