Digital Electronics Quiz

Which number system has a base 16

• Hexadecimal

• Octal

• Binary

• Decimal

What is a digital-to-analog converter?

• It stores digital data on the computer.

• It converts alternating current (AC) into direct current (DC).

• It converts electrical power into mechanical power.

• It takes the digital data from an audio CD and converts it to a useful form

The following hexadecimal number (1E.43)16 is equivalent to

• (36.506)8

• (36.206)8

• (35.506)8

• (35.206)8

How many bits are needed to store one BCD digit?

• 2 bits

• 4 bits

• 3 bits

• 1 bit

Convert (312)8 into decimal

• (201)10

• (202)10

• (203)10

• (204)10

What will be the output from a D flip-flop if D = 1 and the clock is low?

• No change

• Toggle between 0 and 1

• 0

• 1

A SCR (Silicon Controlled Rectifier) is a

• Device with 3 junctions

• Device with 2 junctions

• Device with 1 junction

• Device with 4 junctions

Which semiconductor device is not a current triggering device?

• TRIAC

• MOSFET

• GTO

• Thyristor

Which of these sets of logic gates are known as universal gates?

• XOR, NAND, OR

• OR, NOT, XOR

• NOR, NAND, XNOR

• NOR, NAND

What is the addition of the binary number 101001+ 010011=?

• 010100

• 111100

• 000111

• 101110