Multiple Choice Questions (MCQs)
When the transmission line is idle in an asynchronous transmission
8-bit parallel data can be converted into serial data by using ________ multiplexer.
Consider the sum of weight method for converting decimal into binary value, ________ is the highest weight for 411.
If the voltage drop across the active load is 0 volts due to absence of current the comparator output is a ________.
The domain of the expression AB'CD + AB' + C'D + B is
The Synchronous SRAM also has a Burst feature which allows the Synchronous SRAM to read or write up to ________ location(s) using a single address.
Two types of memories namely the first in-first out (FIFO) memory and last in first out (LIFO) are implemented using ________.
Two signals ________ and ________ provide the timing inputs to the State Machine.
Select the mode of programming in which GAL16V8 can be programmed:
The NOR logic gate is the same as the operation of the ________ gate with an inverter connected to the output.
The ________ input overrides the ________ input.
Implementation of the FIFO buffer in ________ is usually takes the form of a circular buffer.
A SOP expression can be implemented by an ________ combination of gates.
The next state table for REQ1, FLOOR1 and OPEN inputs indicates that the ________ can be pressed at any time either on the first floor or the second floor in elevator.
The 74HC163 is a 4-bit Synchronous counter, it has ________ data output pins.
In memory write cycle, the time for which the WE signal remains active is known as the ________.
As data values are written or read from the RAM Stack Pointer Register increments or decrements its contents always pointing to the stack ________.
The ________ gate and ________ gate implementation connected at the B input of the 4-bit Adder is used to allow Complemented or Un-Complemented B input to be connected to the Adder input.
The Transition table is very similar to the ________ table.
In DRAM read cycle R /W- signal is activated to read data which is made available on the ________ data line.
Demorgan's two theorems prove the equivalency of the NAND and ________ gates and the NOR and ________ gates respectively.
Canonical form is a unique way of representing ________.
A multiplexer with a register circuit converts
The AND Gate performs a logical ________ function.
The maximum value, represented by a single hexadecimal digit is ________.
The output of a NAND gate is ________ when all the inputs are one.
Which one flip-flop has an invalid output state?
The Adjacent 1s Detector accepts 4-bit inputs. If ________ adjacents 1s are detected in the input, the output is set to high.
Divide-by-32 counter can be achieved by using
PLDs have In-System Programming (ISP) capability that allows the ________ to be programmed after they have been installed on a circuit board.
If two numbers in BCD representation generate an invalid BCD number then the binary ________ is added to the result.
PALs tend to execute ________ logic.
For a Standard SOP expression, a ________ is placed in the cell corresponding to the product term (Minterm) present in the expression.
A 4-bit binary up/down counter is in the binary state of zero. The next state in the DOWN mode is:
The 64-cell array organized as 8 x 8 cell array is considered
For a down counter that counts from (111 to 000), if current state is "101" the next state will be ________.
In case of cascading Integrated Circuit counters, the enable inputs and RCO of the Integrated Circuit counters allow cascading of multiple counters together.
In NAND based S-R latch, output of each ________ gate is connected to the input of the other ________ gate.
A 3-variable karnaugh map has
Subtractors also have output to check if 1 has been ________.
The Test Vector definition defines the test vectors for all the three counter inputs and ________ counter output/outputs.
Which of the following is a volatile memory?
In the keyboard encoder, how many times per second does the ring counter scan the key board?
You have to choose suitable option when your timer will reset by considering this given code: TRSTATE.CLK = clk; TMRST: = (TRSTATE = = NSY2) # (TRSTATE = = EWY2);
Flash memory Operation are classified into ________ different operation.
Memory is arranged in ________.
The terminal count of a 4-bit binary counter in the UP mode is ________.
The outputs of SR latches in elevator state machine are feed back to the ________ gate array for connection to the D-flipflops.
An Asynchronous Down-counter is implemented (Using J-K flip-flop) by connecting ________.
The FAST Model Page Access allows ________ memory read and access times when reading successive data values stored in consecutive locations on the same row.
________ is used when the output is connected back to the input of the PAL or if the output pin is used as an input only.
The n flip-flops store ________ states.
Implementation of Latch is required almost ________ transistor.
The Static Ram (SRAM) is non-volatile and is not a ________ density memory as a latch is required to store a single bit of information.
Adding two octal numbers "36" and "71" result in ________.
Implementing the Adjacent 1s detector circuit directly from the function table based on the SOP form requires ________ gates for the 8 product terms (minterms) with an 8-input OR gate.
________ Counters as the name indicates are not triggered simultaneously.
Why demultiplexer is called a data distributor?
Consider A=1, B=0, C=1. A, B and C represent the input of three bit NAND gate, the output of the NAND gate will be ________.
The ABEL Input file can use a ________ instead of the equation to specify the Boolean expressions.
The normal data inputs to a flip-flop (D, S and R, J and K, T) are referred to as ________ inputs.
A NOR based S-R latch is implemented using ________ gates instead of ________ gates.
Which signal must remain valid in memory write cycle after data is applied at the data input lines and must remain valid for a minimum time duration tWD?
Which of the following Output Equations determines the output of the State Machine?
In distributed mode, for a 1024 x 1024 DRAM memory and a refresh cycle of 8 msec, each of the 1024 rows has to be refreshed in ________ when Distributed refresh is used.
A decade counter can be implemented by truncating the counting sequence of a MOD-20 counter.
The S-R latch has two inputs, therefore ________ different combinations of inputs can be applied to control the operation of the S-R latch.
The CONSTATE.CLK = Clock is used to indicate that the ________ state variables change on a clock transition.
The ROM used by a computer is relatively ________ as it stores few byres of code used to Boot the Computer system on power up.
UVERPROM is stands for
If the number of samples that are collected is reduced by half, the reconstructed signal will be ________ from/to the original.
Cin is part of ________ Adder.
GAL can be reprogrammed as instead of fuses E2CMOS logic is used which can be programmed to connect a ________ with a ________.
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