CHAPTER 3 Flashcards
1
Q
NAND
A
- The output is 0 when both inputs are 1, otherwise the output is 1
2
Q
NOR
A
- The output is 1 when both inputs are 0, otherwise the output is 0
3
Q
XOR
A
- The output is 1 when one of the inputs is 1 and the other input is 0,
otherwise the output is 0
4
Q
OR
A
- The output is 0 when both inputs are 0, otherwise the output is 1
5
Q
AND
A
- The output is 1 when both input are 1 ,
otherwise the output is 0
6
Q
Major Category of computer hardware
A
- Input device
- Processing device
- Storage device
- Output device
7
Q
Input device
A
- Hardware component that allow you to enter data or instruction
8
Q
Major types of touchscreen
A
- Capacitive
- Resistive
- Infra-red
9
Q
Resistive touch screen
A
-
10
Q
Resistive benefits
A
- Cheap
- Possible to use bare finger
11
Q
Resistive drawback
A
- Visibility is poor under strong sunlight
- No multi touch
- Screen durability is fair
12
Q
Capacitive Tocuhscreen
A
-
13
Q
Capacitive benefits
A
- Medium cost
- Screen visibility is good under strong sunlight
- Allow multi touch
- Screen is durable
14
Q
Capacitive drawback
A
- Only bare finger allowed
15
Q
Microphone
A
- Convert sound into signal
16
Q
How microphone works ?
A
- When sound hit the diaphragm , its cause to vibrate
- A copper coil wrapped around the permanent magnet connected to diaphragm
- When diaphragm vibrate , the coil move back and forth
- Causing magnetic field around permanent magnet
- The disturbance of Magnetic field around permanent magnet induces electric current
- The signal then sent to ADC
-The signal then sent to Computer in digital format
17
Q
Output devices
A
- Hardware that is used to display output data
18
Q
Laser printer ( Dry powder )
A
19
Q
Principle operations of Microphone
A
- Have diaphragm
- Incoming sound wave cause diaphragm to vibrate
- Causing a coil to move around magnet
- An electrical signal is produced
