IC and Logic Gates Quiz

The IC 555 is primarily used for:

• Frequency modulation

• Timing and pulse generation

• Signal amplification

• Analog-to-digital conversion

In the astable mode, the 555 timer generates:

• A constant high signal

• A single pulse

• A continuous square wave

• A sinusoidal wave

In the IC 555, which of the following pins is the output pin in all configurations?

• Pin 1

• Pin 3

• Pin 4

• Pin 8

The IC 4011 contains:

• Four NAND gates

• Four AND gates

• Four OR gates

• Four NOT gates

What is the output of a NAND gate when both inputs are high?

• High

• Low

• It depends on the state of the inputs

• Undefined

The IC 4029 is primarily used as:

• A BCD to 7-segment decoder

• A 4-bit counter

• A frequency divider

• An oscillator

What is the function of the "UP/DOWN" pin in the IC 4029?

• To reset the counter

• To change the counting direction (up or down)

• To clock the counter

• To latch the current count

The IC 4511 is used to drive a:

• 7-segment display

• LED matrix

• LCD screen

• Analog voltmeter

What does the IC 4511 do with a Binary Coded Decimal (BCD) input?

• Converts it into a binary number

• Drives a 7-segment display according to the BCD input

• Converts it into a 16-segment display format

• Outputs an analog voltage corresponding to the BCD value

In the IC 555, which of the following is used to set the timing in the astable mode?

• Resistor and capacitor

• Voltage divider

• Capacitor only

• Transistor switching