Basic digital electronics interview questions answers pdf

In which of the following base systems is not a valid number? Storage of 1 KB means the following number of bytes a b c d Ans:c. What is the octal equivalent of the binary number: a b c d Pick out the CORRECT statement: a In a positional number system, each symbol represents the same value irrespective of its position b The highest symbol in a position number system as a value equal to the number of symbols in the system c It is not always possible to find the exact binary d Each hexadecimal digit can be represented as a sequence of three binary symbols.

The binary code of Digital computers are more widely used as compared to analog computers, because they are a less expensive b always more accurate and faster c useful over wider ranges of problem types d easier to maintain.

Most of the digital computers do not have floating point hardware because a floating point hardware is costly b it is slower than software c it is not possible to perform floating point addition by hardware d of no specific reason.

The number would appear just immediately after a FFFF hex b binary c octal d All of the above. The number of Boolean functions that can be generated by n variables is equal to a 2n b 22 n c 2n-1 d — 2n Ans:b. A hexadecimal odometer displays F 52 F. Positive logic in a logic circuit is one in which a logic 0 and 1 are represented by 0 and positive voltage respectively b logic 0 and, -1 are represented by negative and positive voltages respectively c logic 0 voltage level is higher than logic 1 voltage level d logic 0 voltage level is lower than logic 1 voltage level.

An OR gate has 6 inputs. The number of input words in its truth table are a 6 b 32 c 64 d Ans:c. In case of OR gate, no matter what the number of inputs, a a 1 at any input causes the output to be at logic 1 b 1 at any input causes the output to be at logic 0 c 0 any input causes the output to be at logic 0 d 0 at any input causes the output to be at logic 1. Excess-3 code is known as a Weighted code b Cyclic redundancy code c Self-complementing code d Algebraic code.

Indicate which of the following three binary additions are correct? Which is the correct order of sequence for representing the input values in K-map? The inputs of a NAND gate are connected together. The resulting circuit is …………. Stop signal b. Invert input signal c. Act as a universal gate d. None of the above Answer : b. OR operation b. AND operation c. NOT operation d.

None of the above Answer : c. What would happen, if smaller logic modules are utilized for performing logical functions associated with FPGA? Propagation delay will increase B. FPGA area will increase C. Wastage of logic modules will not be prevented D.

Number of interconnected paths in device will decrease a. Input operation b. Tristate output operation c. Which type of CPLD packaging can provide maximum number of pins on the package due to small size of the pins?

PLCC b. QFP c. PGA d. Which mechanism allocates the binary value to the states in order to reduce the cost of the combinational circuits? State Reduction b. State Minimization c. Junction Diodes 3. Special Purpose Diodes 4. Rectifiers 6. Electrical Wave Filters 7. BJT Amplifiers. Electronic Meters. Logic Circuits.

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