Description : Interfacing devices for DMA controller, programmable interval timer are respectively…a) 8257, 8253 b) 8253, 8257 c) 8257,8251 d)8251,825721.
Last Answer : a) 8257, 8253
Description : The CPU sends out a ____ signal to indicate that valid data is available on the data bus: a. Read b. Write c. Both A and B
Last Answer : b. Write
Description : BHE of 8086 microprocessor signal is used to interface the a) Even bank memory b) Odd bank memory c) I/O d) DMA
Last Answer : b) Odd bank memory
Description : A DMA controller transfers 32-bit words to memory using cycle Stealing. The words are assembled from a device that transmits characters at a rate of 4800 characters per second. The CPU is fetching and executing instructions at an average ... of the DMA transfer? (A) 0.06% (B) 0.12% (C) 1.2% (D) 2.5%
Last Answer : Answer: B
Description : The ________ ensures that only one IC is active at a time to avoid a bus conflict caused by two ICs writing different data to the same bus.A.control busB.control instructionsC. address decoder D.CPU
Last Answer : C. address decoder
Description : Which of the following are the two main components of the CPU? a. Control unit and registers b. Registers and main memory c. Control Unit and ALU d. ALU and bus
Last Answer : c. Control Unit and ALU
Description : The lower red curvy arrow show that CPU places the address extracted from the memory location on the_____: a. Address bus b. System bus c. Control bus d. Data bus
Last Answer : a. Address bus
Description : Which bus transfer singles from the CPU to external device and others that carry singles from external device to the CPU: a. Control bus b. Data bus c. Address bus d. None of these
Last Answer : a. Control bus
Description : CPU can read & write data by using : a. Control bus b. Data bus c. Address bus d. None of these
Last Answer : b. Data bus
Description : Control signals used for DMA operation are ____________
Last Answer : HOLD & HLDA.
Description : Which is not the control bus signal: a. READ b. WRITE c. RESET
Last Answer : c. RESET
Description : Which is the components of computer: a. System Bus b. CPU c. Memory Unit d. All of these
Last Answer : d. All of these
Description : The ____ place the data from a register onto the data bus: a. CPU b. ALU c. Both A and B d. None of these
Last Answer : a. CPU
Description : The information on the data bus is transferred to the ______register: a. MOC b. MDR c. VAM d. CPU
Last Answer : b. MDR
Description : Which Bus connects CPU & level 2 cache: a. Rear side bus b. Front side bus c. Memory side bus d. None of these
Last Answer : b. Front side bus
Description : The mode of DMA are: a. Single transfer b. Block transfer c. Burst –block transfer d. Repeated single transfer e. Repeated–block transfer f. Repeated Burst –block transfer g. All of these
Last Answer : g. All of these
Description : The DMA controllers are special hardware embedded into the chip in modern integrate processor that ____and_____ to the system; a. Data transfer b. arbitrate access c. Both A and B d. None of these
Last Answer : c. Both A and B
Description : DMA stands for: a. Dynamic memory access b. Data memory access c. Direct memory access d. Both B and C
Last Answer : d. Both B and C
Description : DMA stands for: a. Direct memory access b. Direct memory allocation c. Data memory access d. Data memory allocation
Last Answer : a. Direct memory access
Description : The CPU removes the ___ signal to complete the memory write operation: a. Read b. Write c. Both A and B d. None of these
Last Answer : a. Read
Description : What is the control unit's function in the CPU? a. To transfer data to primary storage b. to store program instruction c. to perform logic operations d. to decode program instruction
Last Answer : b. to store program instruction
Description : The brain of any computer system is a. ALU b. Memory c. CPU d. Control unit
Last Answer : c. CPU
Description : What is the responsibility of the logical unit in the CPU of a computer? a. To produce result b. To compare numbers c. To control flow of information d. To do math’s works
Last Answer : b. To compare numbers
Description : The central processing unit (CPU) consists of a. Input, output and processing b. Control unit, primary storage, and secondary storage c. Control unit, arithmetic-logic unit and primary storage d. Control unit, processing, and primary storage
Last Answer : c. Control unit, arithmetic-logic unit and primary storage
Description : The upper red arrow show that CPU sends out the control signals____ and _____ indicate the data is read from the memory: a. Memory request b. Read c. Both A and B d. None of these
Description : Which is an important data transfer technique . a. CPU b. DMA Cc. CAD d. None of these
Last Answer : b. DMA
Description : System Bus Contains: a. Address Bus b. Data Bus c. Control Bus d. All of these
Description : What type of control pins are needed in a microprocessor to regulate traffic on the bus, in order to prevent two devices from trying to use it at the same time? a. Bus control b. Interrupts c. Bus arbitration d. Status
Last Answer : c. Bus arbitration
Description : Which of the following is used for manufacturing chips? a. Control bus b. Control unit c. Parity unit d. Semiconductor
Last Answer : d. Semiconductor
Description : Which is used for manufacturing chips? a. Bus b. Control unit c. Semiconductors d. A and b only
Last Answer : c. Semiconductors
Description : Which bus plays a crucial role in I/O: a. System bus b. Control bus c. Address bus d. Both A and B
Last Answer : b. Control bus
Description : Which bus carry addresses: a. System bus b. Address bus c. Control bus d. Data bus
Last Answer : b. Address bus
Description : In 8096, CCB bit 3 is ____. a) write strobe mode select b) address valid strobe select c) bus width select d) Internal read control mode
Last Answer : c) bus width select
Last Answer : b) address valid strobe select
Description : An integrated circuit is a. A complicated circuit b. An integrating device c. Much costlier than a single transistor d. Fabricated on a tiny silicon chip
Last Answer : d. Fabricated on a tiny silicon chip
Description : Chief component of first generation computer was a. Transistors b. Vacuum Tubes and Valves c. Integrated Circuits d. None of above
Last Answer : b. Vacuum Tubes and Valves
Description : MSI stands for a. Medium Scale Integrated Circuits b. Medium System Integrated Circuits c. Medium Scale Intelligent Circuit d. Medium System Intelligent Circuit
Last Answer : b. Medium System Integrated Circuits
Description : Which is the main feature of 8085: a. Internal clock generator b. Internal system controller c. Higher clock frequency d. All of these
Description : The system unit of a personal computer typically contains all of the following except: a. Microprocessor b. Disk controller c. Serial interface d. Modem
Last Answer : d. Modem
Description : Which pin of port 3 is has an alternative function as write control signal for external data memory? a) P3.8 b) P3.3 c) P3.6 d) P3.1
Last Answer : d) P3.1
Last Answer : c) P3.6
Description : The method of synchronising the processor with the I/O device in which the device sends a signal when it is ready is? a) Exceptions b) Signal handling c) Interrupts d) DMA
Last Answer : Interrupts
Description : A unit ramp function when integrated yields: A) unit parabolic function B) unit ramp function C) unit doublet D) unit impulse function
Last Answer : A unit ramp function on integration yields a unit parabolic function
Description : Which system communicates with the outside word via the I/O devices interfaced to it: a. Microprocessor b. Microcomputer c. Digital computer d. All of these
Last Answer : b. Microcomputer
Description : Can you tell what passes into and out from the computer via its ports? a. Data b. Bytes c. Graphics d. Pictures
Last Answer : a. Data
Description : PC’s use____ based on this architecture: a. CPU b. ALU c. MU
Description : Which process information at a much faster rate than it can retrieve it from memory: a. ALU b. Processor c. Microprocessor d. CPU
Last Answer : d. CPU
Description : Who is the represents the fundamental process in the operation of the CPU: a. The fetch-execute cycle and pipelining b. The assembly c. Both A and B d. None of these
Last Answer : a. The fetch-execute cycle and pipelining
Description : A computer which has the microprocessor as______ is called as a microcomputer: a. CPU b. ALU c. RU