DATA PROCESSING :
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DATA PROCESSING
1a) digitization is the representation of an object, image, sound, document or a signal (usually an analog signal) by a discrete set of its points or samples.b)
(i)
1) They were fast and more reliable.
2) High level language was developed.
(ii)
– Joystick
– Keyboard
(c)
(i)
An operating system (OS) is software that manages computer hardware and software resources and provides common services for computer programs. The operating system is an essential component of the system software in a computer system.
(ii)
Disk Operating System
Windows.
2a)data is information that has been translated into a form that is more convenient to move or process.
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3.
(ai)
word processing is the use of computer software to create edit, view, store, retrieve and print text documents
(ii)
– ability to display graphic
– ability to mail merge document
(bi)
Ms-office 2003
MS – office 2007
(ii)
spreadsheet: is an electronic document in which data is arranged in the rows and columns of a grid and can be manipulated and used in calculations
(iii)
Ms excel & LOtus
(ci)
To save document in Ms word
– click on the office button
– select save from the displayed options
– select the drive or directory to store the document by clicking on the arrow on the save in combo box
– click on the file name, type the desired document name
-click on save button
(ii)
(a) CTRL + X = this cuts (removes) a selected/highlighted copy and paste it on the clipboard
(b) CTRL + V = this inserts the copy on the clipboard into the area where your flashing cursor is positioned or the area you have selected
DATA PROCESSING
9a )- He decides the demand of the product at that time
– He helps to make arrangement for storage facilities
– He helps to fix the price for the price for the agricultural product
He helps to look at the quality and quantity of agricultural product to be marketed-
He helps to grade the agricultural product
(9 b) – Facilitator helps to decide where there is the demand for the processed food –
He also helps in fixing the good price for the product
– He decides on how to store the product in the case of excess –
He will decide the quality of the product-
He helps in grading of the product
Data processing
(6 a)
(i ) Devices with high Processor is faster in accessing of data
(ii ) When the memory size of the device is high , it quicks data access .
(iii ) When the Content of the device is high, it slows down access of data
(iv ) Virus- free device can access data quicly
(6 b)
(i ) Instant messaging is a type of communications service that enables you to create a kind of private chat room with another individual in order to communicate in real time over the Internet, analagous to a telephone conversation but using text – based , not voice – based , communication .
(ii ) E – commerce (electronic commerce or EC) is the buying and selling of goods and services , or the transmitting of funds or data , over an electronic network , primarily the internet .
(iii ) Homepage: This is the main page of a website which gives detailed information on its owner and provides links to its other parts . Usually it is the first page seen by every visitor, but some sites ( such as those of newspapers or portals ) display a fresh page everyday, custom – tailored to the individual visitor’ s preferences.
(iv ) ISP : ISP simply means Internet Service Provider. It is a company that provides you with access to the Internet, usually for a fee. The most common ways to connect to an ISP are by using a phone line (dial- up ) or broadband connection ( cable or DSL ) .
2 a )
Micro soft offfice word
2 aii )
water mark
2 aiii)
by saving doucument to a secured storage device
2 bi)
icon- is a pictogram or ideogram displayed on a computer screen in order to help the user navigate a computer system or mobile device .
2 bii )
browser – is a software application for retrieving ,presenting and traversing information resources on the World Wide Web .
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