IGCSE Computer Science Paper 1 Crossword: 3.2 Input and Output Devices (Modules 252–261)
Name:
Date:
Class:
✎
Crossword
Read each clue and write the matching term in the grid. Numbers in brackets show the letters in each word.
1
2
3
4
5
6
7
8
9
Across
- 5. A screen with two conductive layers that touch when pressed; the change in resistance at the touch point gives its position. Works with finger, glove or stylus. Word 1 of: _________ _____ ______ (9)
- 7. An input device that shines a laser across a ______. Black lines absorb light, white gaps reflect it, and a sensor reads the pattern to get the product number. Word 1 of: _______ _______ (7)
- 8. Word 2 of the term in 7 Across: _______ _______ (7)
- 9. Word 2 of the term in 6 Down: _____-___ _____ ______ (3)
Down
- 1. A touch screen with a charged glass layer. A finger conducts electricity and changes the charge at the touch point, so its position is found. Supports multi-touch. Word 1 of: __________ _____ ______ (10)
- 2. Uses a camera to capture a 2D square grid of black and white modules and decodes it into data like a web address or text. It holds more data than a barcode and reads from any angle. Word 2 of: QR ____ _______ (4)
- 3. A display that is also an input device: it detects where a finger or stylus touches it. Types are resistive, capacitive and infra-red. Used in phones, tablets, kiosks and ticket machines. Word 2 of: _____ ______ (6)
- 4. Word 1 of the term in 3 Down: _____ ______ (5)
- 6. A screen with a grid of ______-______ beams across it. A touch breaks beams, and the broken x and y beams give the touch position. Works with any object. Word 1 of: _____-___ _____ ______ (5)
Answer Key
IGCSE Computer Science Paper 1 · Modules 252–261
1C
A
P
2C
3S
A
O
C
C
D
4T
5R
E
S
6I
S
T
I
V
E
7B
A
R
C
O
D
E
N
T
U
E
F
I
8S
C
A
N
N
E
R
V
H
A
9R
E
D
Across
5RESISTIVE — A screen with two conductive layers that touch when pressed; the change in resistance at the touch point gives its position. Works with finger, glove or stylus. Word 1 of: _________ _____ ______
7BARCODE — An input device that shines a laser across a ______. Black lines absorb light, white gaps reflect it, and a sensor reads the pattern to get the product number. Word 1 of: _______ _______
8SCANNER — Word 2 of the term in 7 Across: _______ _______
9RED — Word 2 of the term in 6 Down: _____-___ _____ ______
Down
1CAPACITIVE — A touch screen with a charged glass layer. A finger conducts electricity and changes the charge at the touch point, so its position is found. Supports multi-touch. Word 1 of: __________ _____ ______
2CODE — Uses a camera to capture a 2D square grid of black and white modules and decodes it into data like a web address or text. It holds more data than a barcode and reads from any angle. Word 2 of: QR ____ _______
3SCREEN — A display that is also an input device: it detects where a finger or stylus touches it. Types are resistive, capacitive and infra-red. Used in phones, tablets, kiosks and ticket machines. Word 2 of: _____ ______
4TOUCH — Word 1 of the term in 3 Down: _____ ______
6INFRA — A screen with a grid of ______-______ beams across it. A touch breaks beams, and the broken x and y beams give the touch position. Works with any object. Word 1 of: _____-___ _____ ______