ELECTRONICS Digital Processes

Question 0

Draw a NPN transistor

Answer 0

Collector
Base
Emitter (arrow here)

Question 1

What is a transistor?

Answer 1

An electronic switch

Question 2

At what voltage value is the transistor switch on?

Answer 2

0.7v

Question 3

GO AND LOOK AT CIRCUIT SHEETS

Answer 3

NOOOOOOOOW

Question 4

What does a not gate look like?

Answer 4

Triangle

Question 5

What is a NOT gates process?

Answer 5

Opposite of input eg input 1 output 0. NOT the same as input

Question 6

What does an AND gate look like and what is its process?

Answer 6

A D, both inputs must be 1. 1 AND 1

Question 7

What does the OR gate look like and what is its process?

Answer 7

Space ship, if either has an input of 1. Either OR

Question 8

What is a truth table used for?

Answer 8

To show all possibilities

Question 9

How is a 1 input produced and how is a 0 input produced?

Answer 9

1:high voltage, 0: low voltage.

Question 10

What produces clock pulses?

Answer 10

Digital systems

Question 11

How are clock pulses counted?

Answer 11

By a counting circuit

Question 12

Give an example of a device containing a clock circuit

Answer 12

Calculators

Question 13

What type of number is priced by a counter circuit?

Answer 13

A decimal display

Question 14

What can be done to out puts of counter circuits?

Answer 14

Made into a decimal display

Question 15

What are clock pulses?

Answer 15

Pulses of voltage that occur regularly.

Question 16

How can the rate of the pulse be changed?

Answer 16

Changing the capita de of the capacitor or resistance of a resistor.

Question 17

Give an example where a clock pulse generator could be used

Answer 17

Trafficmlights

Question 18

The values of the ______ and the ______ control the frequency of the clock pulse circuit.

Answer 18

The values of the CAPACITOR and the RESISTOR control the frequency of the clock pulse circuit.

Question 19

What is a counter circuit?

Answer 19

A circuit that can count the electrical pulses given by a clock pulse generator.

Question 20

How can the output of a counter (binary) be changed to a decimal number?

Answer 20

Using a binary to decimal circut

Question 21

What is an oscillator?

Answer 21

A machine that produces clock pulses by charging and recharging a capacitor.