Apersonal digital assistant or PDA is a tiny computer which can be held in one hand. The term PDA refers to a wide variety of hand-held devices, palmtops and pocket PCs.
For input, you type at a small keyboard or use a stylus - a special pen used with a touch screen to select items, draw pictures, etc. Some models incorporate handwriting recognition, which enable a PDA to recognize characters written by hand. Some PDAs recognize spoken words by using voice recognition software.
They can be used as mobile phones or as personal organizers for storing notes, reminders and addresses. They also let you access the Internet via wireless technology, without cables.
Awearable computer runs on batteries and is worn on the user's body, e.g. on a belt, backpack or vest; it is designed for mobile or hands-free operation. Some devices are equipped with a wireless modem, a small keyboard and a screen; others are voice-activated and can access e-mail or voice mail.
Find in the text. Which type of computer do these descriptions refer to? 1. - a hand-held computer which can be used as a telephone, a web explorer and a personal organizer
2. - a typical computer found in many businesses and popular for home use
3. - a large computer used for intensive data processing and often linked to many terminals
4. - a small computer that fits into items of clothing
5. - a portable computer that can be closed up like a briefcase, but it can be as powerful as a desktop PC
6. - full function PC, though it only weighs 1.2 kg – you can go to a meeting and write your notes on it, like a paper notepad; its screen mode can be changed from portrait to landscape
TASK 7. MATCH THESE WORDS FROM THE TEXT (1-9) WITH THE CORRECT MEANINGS (a-i).
Words
Meanings
1. Software
2. Peripherals
3. Main memory
4. Hard drive (also known as hard disk)
5. Hardware
6. Input
7. Ports
8. Output
9. Central processing unit (CPU)
