Digital Electronics Question Bank with Answers Pdf - 1

Question: 1

Memory refreshing may be done

(A) Either by the CPU or by an external refresh controller

(B) By the CPU that contains a special regress counter only

(C) By an external refresh controller, only

(D) None of these

Question: 2

Which of the following logic families has the lowest power-delay product?

(A) MOS

(B) IIL

(C) TTL

(D) ECL

Question: 3

MOS logic gates have no current hogging problem because the gate terminal has

(A) Compensating effect

(B) High impedance

(C) Zero impedance

(D) Low input impedance

Question: 4

Which of the following TTL, sub-family is fastest?

(A) Standard TTL

(B) High Speed TTL

(C) Low-Speed TTL

(D) Scotty TTL

Question: 5

What should be added so that a CMOS gate drives TTL at the same supply voltage?

(A) High value capacitor

(B) Buffer

(C) Pull up transistor

(D) Pull down transistor