1. The document discusses the four main functions of computers: input, processing, output, and storage. 2. It defines common input devices like keyboards, mice, digital cameras, and scanners that are used to input information into computers. It also defines processing devices and mentions the central processing unit (CPU). 3. It describes common output devices like speakers, monitors, and printers that are used to display or output information from computers. It also discusses common storage devices like floppy disks, CDs, and DVDs that are used to store information.

1. Unit (9) Bits and Bytes
Ex. 1.A
1. Computers perform four functions: input, processing, output, and storage.
2. Input devices: These devices are used to give information to the computer.
3. Processing device: It is responsible for processing all of the information that is inputted to the
computer.
4. Output devices: These devices are used to display or output information from the computer.
5. Storage devices: These devices are used to store information.
INPUT PROCESS OUTPUT STORAGE
Keyboard CPU Speakers Floppy Disks
Mouse Processor Monitor CDs
Digital Camera Printer DVDs
Scanner
Vocabulary
1
( ‫ثنائية‬ ‫رقمية‬ ‫وحدة‬ / ‫بت‬
1
-
0
)
Bit
10
‫معال‬
Processor
2
‫من‬ ‫وحدة‬ / ‫ابيت‬
8
‫ثنائية‬ ‫قام‬‫ر‬‫أ‬
Byte
11
‫أجهزة‬
‫املخرجات‬
Output devices
3
‫أجهزة‬
‫املدخالت‬
Input devices
12
‫الصوت‬ ‫ات‬‫رب‬‫مك‬
Speakers
4
‫املفاتيح‬ ‫لوحة‬
Keyboard
13
‫شاشة‬
Monitor
5
‫فارة‬/‫ماوس‬
Mouse
14
‫طابعة‬
Printer
6
‫رقمية‬ ‫ا‬‫ري‬‫كام‬
Digital Camera
15
‫ين‬‫ز‬‫التخ‬ ‫أجهزة‬
Storage devices
7
‫الضوئي‬ ‫ماسح‬
Scanner
16
‫نة‬‫ر‬‫امل‬ ‫اص‬‫ر‬‫األق‬
Floppy Disks
8
‫املعاجلة‬ ‫جهاز‬
Processing device
17
‫املدجمة‬ ‫اص‬‫ر‬‫األق‬
CDs
9
‫ية‬‫ز‬‫ك‬
‫املر‬ ‫املعاجلة‬ ‫وحدة‬
CPU (Central Processing Unit)
18
‫اص‬‫ر‬‫أق‬
‫الرقمية‬ ‫الصورة‬
DVDs

2. Ex. 1.B
1. CDs are the most popular form of portable data storage. I
2. A microprocessor chip does all the mathematical and logical operations. A
3. A digital camera is used to input photographs and short video recordings. D
4. A graphics tablet is used to draw pictures. H
5. A modem sends data to another computer along a telephone line. E
6. A scanner is used to copy pictures and text into the computer. C
7. Speakers produce sound from the hard disk or from a portable data storage device. F
8. A DVD can hold huge amounts of data. G
9. A microphone is used to convert sound into electrical energy. B
Vocabulary
1
‫حسابية‬ ‫عمليات‬
mathematical operations
6
‫شرحية‬
chip
2
‫منطقية‬ ‫عمليات‬
logical operations
7
‫رسم‬ ‫لوحة‬
graphics tablet
3
‫متنقل‬ ‫جهاز‬
portable device
8
‫صور‬
photographs
4
‫البياانت‬ ‫حفظ‬
data storage
9
‫مودم‬
/
‫اتصال‬ ‫جهاز‬
modem
5
‫الدقيق‬ ‫املعاجل‬
microprocessor