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NECO 2020 - COMPUTER STUDY ANSWER
NECO 2020 - COMPUTER STUDY ANSWER

NECO 2020 - COMPUTER STUDY ANSWER



COMPUTER OBJ
1-10: DDCDDEEBCA
11-20: AECEDAEACB
21-30: BCCAADCDDE
31-40: EAECAEDEAC
41-50: CEAABDABAD
51-60: ACCCAAADDD
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(1a)
(i) Ctrl + F11 --->lock a field so it can not be edited
(ii) Ctrl + T ---> create a hanging indent
(iii) Shift + F11 ---> jump to pervious field in a document
(iv) Ctrl + R ---> Align Right

(1b)
[Choose ANY FOUR]
(i) Accurate: Information should be fair and free from bias. It should not have any arithmetical and grammatical errors. Information comes directly or in written form likely to be more reliable than it comes from indirectly (from hands to hands) or verbally which can be later retracted.
(ii) Complete: Accuracy of information is just not enough. It should also be complete which means facts and figures should not be missing or concealed. Telling the truth but not wholly is of no use.
(iii) User-targeted: Information should be communicated in the style, format, detail and complexity which address the needs of users of the information.
(iv) Relevant: Information should be communicated to the right person. It means person which has some control over decisions expected to come out from obtaining the information.
(v) Timely: Information should be communicated in time so that receiver of the information has enough time to decide appropriate actions based on the information received.


(1c)
[Choose ANY FOUR]
(i) It has a greater channel capacity
(ii) Low error rates
(iii) It provide greater bandwidth system wide
(iv) It support a mixed range of service
(v) Greater spacing between amplifiers
=====================================


(3ai)
Data representation is defined as the form in which information is stored, processed and transmitted.

(3aii)
(i) Universal Serial Bus (USB) - It is used to connect peripheral device such as mice, modern, keyboard, printers to the computer

(ii) Registered Jack (RJ-11) - It is used to connect telephone equipment

(iii) Fiber local connector - It is for single mode and multi mode fibre-optic cable

(iv) F-Type - It is used for cable and universally for satellite television

(3bi)
Binary coded decimal: This uses 4-bit to present each decimal digit in a number for example to represent the number 23, there will be two group of four bit each
0010 0011
2 3

(3bii)
Extended binary coded decimal interchange code: This may be described as 8-bit coded system. It can conveniently be used to represent decimal digit 0 to 9 upper case or lower case letters and extra characters.
=====================================

(4ai)
Presentation package is define as a software program that provide the resources necessary to give a profession presentation for meeting, lectures, speeches or other similar situation.

(4aii)
(i) Real-time collaboration
(ii) Mobile editing
(iii) creative design tools
(iv) Online sharing
(v) Technical support
(vi) Template availability

(4bi)
Data bus: This is system within a computer or device, consisting of a connector or set of wires, that provides transportation for data. The data bus allows data to travel back and forth between the micro-processor (CPU) and memory (RAM)

(4bii)
Address bus: Address bus is a part of the computer system bus that is dedicated for specifying a physical address. When the computer processor needs to read or write from or to the memory, it uses the address bus to specify the physical address of the individual memory block it needs to access (the actual data is sent along the data bus)

(4biii)
Control bus: The control bus comprises of various single lines. It connects PC,registers,ALU,etc with control and timing circuit. It carry synchronisation signal.
=====================================


(5a)
Tabulate:
-Application software:
(i) Spreadsheet
(ii) Desktop publishing

-Two examples-
Spreadsheet:
(i) Microsoft excel
(ii) Lotus 1-2-3

Desktop publishing:
(i) Corel draw
(ii) Microsoft word

(5bi)
CC: It stands for carbon copy. It is a way of sending copies of email to other people whereas the list of all the recipient can be seen by other recipients.

(5bii)
BCC: It stands for blind carbon copy. It is a way of sending copies of email to other people whereas other recipients would not be able to see that someone else has been sent a copy of the e-mail.

(5biii)
Domain name: This is a website name. It is an address where internet user can access one's website. It is simply a human readable from of an IP address.






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