3.1. Look at A opposite. Which type of computers do these descriptions refer to.
1. A hand-held computer wich can be used as a telephone, a web explorer and a personal organizer.
Answer : Personal Digital Assistant (PDA)
2. A typical computer found in many businesses and popular for home use.
Answer : Desktop PC
3. A large computer used for intensive data processing and often linked to many terminals.
Answer : Mainframe
4. A small computer that first into items of clothing.
Answer : Wearable Computer
5. A portable computer that can be closed up like a briefcase, but it can be as powerful as desktop PC.
Answer : Laptop
6. A full function PC, thought in 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.
Answer : Tablet PC
3.2. Look at the computer advertisement and find this information
Toshiba Satellit
* 1.024 MB RAM, 1000 GB hard disk drive
* Dvd Supermulti (+/-R double layer) drive
* 15-4" widescreen TFT active matrix LCD display
* 85-key keyboard and touchpad
* 2 Memory slot, 1 PC card or PCMCIA slot
* Wireless communication : Wi-Fi compliancy and Bluetooth
* 4 USB port for connecting peripherals : digital camera, MP3 player, modem, etc
* 6-cell rechargeable Lithium-ion battery pack.
1. What type of computer is advertised ?
Answer : Laptop
2. What kind of screen does it have?
Answer : Thin Film Transistor (TFT)
3. Which pointing device replace the mouse ?
Answer : Touchpad
4. What type of ports does it have for connecting cameras and music player ?
Answer : Universal Serial Bus (USB)
5.What sort of power supplay does it use ?
Answer : 6-cell rechargeable Lithium-ion battery pack
3.3. Read this interview with Adam Hawkins, an IT manager, and complete it with words from the PDA section oppsite :
Interviewer : What are the basic features of a PDA ?
Adam : Well a typical PDA is a (1) hand-held device that runs on batteries and combines computing, phone and Net capabilities
Interviewer : And how do you enter information?
Adam : For input, you use a (2) styles or pen to write and make selections on a (3) touch screen; they also have buttons for lauching programs. Some models have a small keyboard. They may have a (4) voice recognition system that reacis to the user’s voice.
Interviewer : Do they need special software?
Adam : Yes, most of them run on Windows Mobile. Palmtops supported by Palm Inc, use Palm OS. Pen-based systems include (5) handwriting recognition so you write on the screen and the computer recognizes your handwriting and anserts the appropiate letters.
Interviewer : What sort of things can you do with a PDA?
Adam : You can store personal information, take notes draw diagrams and make calculations. Many PDAs can acces the Net via (6) wireless technology.
You and Computer
-->
1. Write down two benefits and two limitations of PDAs.
-->Answer :
Benefits :
1.
can conduct transactions and access information anywhere
2. PDA equipped with email and text messaging functions
2. PDA equipped with email and text messaging functions
limitations :
1. lack of Privacy2. cost
In order for a Personal Digital Assistant has a full range of features, you must register for certain types of Internet data plan with your mobile phone provider. This plan data tend to cost up to U.S. $ 30 per month extra
2. Explain in a paragraph how laptops can be beneficial to business people.
Answer :
-->give the business more flexibility, by saving the number of wires, just need a cable that is used to charge the battery, if necessary to complete the work outside the home and able to finish an important document that has tight deadlines, whilst leaving the workplace,
3. Write three examples of how tablet PCs can be used in the classroom.
Answer :
* Can do internet with mobility, without having to sit glued in front of the computer desk.
* Teleconferencing can also Ber-Face to Face
* Looks like a book so it can be used as a means of
changing the book
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