Top 350+ Solved Digital Electronics MCQ Questions Answer
Q. Logic circuits that are designated as buffers, drivers or buffers/drivers are designed to have:
a. a greater current/voltage capability than an ordinary logic circuit
b. greater input current/voltage capability than an ordinary logic circuit
c. a smaller output current/voltage capability than an ordinary logic
d. greater the input and output current/voltage capability than an ordinary logic circuit
Q. Which of the following will not normally be found on a data sheet?
a. minimum high level output voltage
b. maximum low level output voltage
c. minimum low level output voltage
d. maximum high level input current
Q. Which of the following logic families has the shortest propagation delay?
a. s-ttl
b. as-ttl
c. hs-ttl
d. hcmos
Q. What is the static charge that can be stored by your body as you walk across a carpet?
a. 300 volts
b. 3000 volts
c. 30000 volts
d. over 30000 volts
Q. What must be done to interface TTL to CMOS?
a. a dropping resistor must be used on the cmos of 12 v supply to reduce it to 5 v for the ttl
b. as long as the cmos supply voltage is 5 v they can be interfaced (however, the fan- out of the ttl is limited to five cmos gates)
c. a 5 v zener diode must be placed across the inputs of the ttl gates in order to protect them from the higher output voltages of the cmos gates
d. a pull-up resistor must be used between the ttl output-cmos input node and vcc; the value of rp will depend on the number of cmos gates connected to the node
Q. What causes low-power Schottky TTL to use less power than the 74XX series TTL?
a. the schottky-clamped transistor
b. a larger value resistor
c. the schottky-clamped mosfet
d. a small value resistor
Q. What are the major differences between the 5400 and 7400 series of ICs?
a. the 5400 series are military grade and require tighter supply voltages and temperatures
b. the 5400 series are military grade and allow for a wider range of supply voltages and temperatures
c. the 7400 series are an improvement over the original 5400s
d. the 7400 series was originally developed by texas instruments and the 5400 series was brought out by national semiconductors after ti’s patents expired as a second supply source
Q. Memory is a/an
a. device to collect data from other computer
b. block of data to keep data separately
c. indispensable part of computer
d. device to connect through all over the world
Q. The instruction used in a program for executing them is stored in the
a. cpu
b. control unit
c. memory
d. microprocessor
Q. A register file holds
a. a large number of word of information
b. a small number of word of information
c. a large number of programs
d. a modest number of words of information
Q. The very first computer memory consisted of
a. a small display
b. a large memory storage equipment
c. an automatic keyboard input
d. an automatic mouse input
Q. A flip flop stores
a. 10 bit of information
b. 1 bit of information
c. 2 bit of information
d. 3-bit information
Q. Which one of the following has capability to store data in extremely high densities?
a. register
b. capacitor
c. semiconductor
d. flip-flop
Q. A large memory is compressed into a small one by using
a. lsi semiconductor
b. vlsi semiconductor
c. cdr semiconductor
d. ssi semiconductor