Digital electronics

The time required for a pulse to go from LOW level to HIGH level is called

• rise time

• fall time

• bit time

• pulse width

the time required for the transition from the HIGH level to LOW level is called

• rise time

• fall time

• bit time

• pulse width

• the measure of duration of the pulse and is often defined as the time interval between 50% points on the rising and falling edges

• rise time

• fall time

• bit time

• pulse width

A periodic pulse waveform is one that repeats itself at a fixed interval.

• True

• False

A periodic digital waveform has a pulse width of 30μs and a period of 160μs. Determine the frequency and the duty cycle.

• 62.5 kHz, 18.75%

• 6.25 kHz, 18.75%

• 0.625 kHz, 18.75%

• 625 kHz, 18.75%

convert binary number (11011001) to decimal

• 216

• 217

• 218

• 219

convert fraction binary number (0.1101) to decimal

• 0.0625

• 0.25

• 0.5

• 0.8125

convert decimal (156) to binary

• 10011101

• 10011100

• 10011110

• 10011111

convert decimal fraction (11.3125) to binary

• 1011.0101

• 1011.0110

• 1011.1010

• 1011.0100

convert decimal (269) to hexadecimal

• 10A

• 10B

• 10C

• 10D