Input and Output Devices
Lesson 2
1. Input and Output Devices
Devices connect to the computer MOTHERBOARD via some kind of INTERFACE.
Common interfaces are PORTS, or connectors in the back or front of your PC, and SLOTS on the board itself. You can attach devices onto "cards" fitted into PCI or AGP SLOTS inside the computer.
Copy the following list into a document and save it as INPUT OUTPUT DEVICES in your theory folder.
Next to each item write down whether it is used for INPUT or OUTPUT
Scanner
Printer
Joystick
Plotter
Monitor
Keyboard
Graphics Tablet
Wireless mouse
Infrared pointer
Loudspeaker
VDU
Voice Synthesiser
See if you can add any more devices to this list. You may want to use www.wikipedia.org to help you search.
2. Homework 1
Draw a diagram of a computer system showing how the main components are connected; you may add any devices you wish to your system. If possible, show whether the device is connected to a PORT, or a PCI or AGP slot.
3. Homework 2
Write an algorithm and pseudocode for the following:
A teacher has 18 students in his class. He wants to create a "calculator" which must do only one job: prompt for each of 18 scores in turn and add each score so that, at the end, the total score and average can be displayed. Use a LOOP to complete the task.
posted by John S @ 6:13 AM
2 Comments:
This is a development of Lesson 1, where you used a lot of INPUT statements.
If you use a LOOP, you can save a lot of time.
How many times do you want to ask for a number? (in this case - 18)
Type
HEy Hoh, I am doing CXC next year and I realized that the internet is not that useful if you don't know what ur looking for....I have this project about Sharing of information from the chapter Information Collection, Storage and Sharing and I would like to know more about it ....plz could u write an article on that?
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