What input and output devices would you use for the following systems? For each, compare and contrast alternatives, and if appropriate indicate why the conventional keyboard, mouse and c.r.t screen may be less suitable a. portable word processor b. tourist information system c. tractor-mounted crop-spraying controller d. air traffic control system e. worldwide personal communications system f. digital cartographic system
Answers
Answer:
A typical configuration of user input/output devices would be a screen with a keyboard for typing text and a mouse for pointing and positioning. Depending on circumstance, different pointing devices may be used such as light pen (for more direct interaction) or a trackball (especially on portable computers).
Answer:
The input and output devices are used for the purpose of different technologies related to finding GPS, LCD and mobile phone.
Explanation:
Given that:
What input and output devices would you use for the following systems? For each, compare and contrast alternatives, and if appropriate indicate why the conventional keyboard, mouse and c.r.t screen may be less suitable.
a. portable word processor
Answer:
- It determines the factors with relation to the size, weight and power of a battery.
- The word processor has no address book or other device related to data entry.
Example:
LCD, Keyboard and Low power jet bubble printer.
b. tourist information system
Answer:
It is used in the public place. The users will visit the system for once and information with interaction of mode is immediately understandable.
Examples:
Touch screen mode and styluses.
c. tractor-mounted crop-spraying controller
Answer:
It is an environment that is hostile which has plenty of mud and few chemicals. They will require a input which is numerical.
Example:
Touch keyboard which is sensitive and LED display.
d. air traffic control system
Answer:
- It is immediately available information that is interactive and rapid in nature.
- The controller will not afford or spend time for searching information, it will be used for the purpose of the readily available information.
Example:
Light pen and keyboard.
e. worldwide personal communications system
It is called as a smart phone that is it appears to be in small, light weight and pocket friendly in size.
Example:
Standard keypad telephone
LCD display that is small.
f. digital cartographic system
Answer:
- It is a digital mapping and it uses the process of collection of the data which can be compiled and it will be formatted in the form of the virtual image.
- This technology uses calculation of distances from one place to another as in the process.
Example:
GPS system.
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