Waec 2017 Data Processing Obj And Theory Answers – May/June Expo
Friday, 31st March, 2017
Data Processing 2 (Essay) 09.30am – 11.30am
Data Processing 1 (Objective) 11.30am – 12.20am
DATA PROCESSING OBJ:
Information and communications technology (ICT) refers to all the technology used to handle telecommunications, broadcast media, intelligent building management systems, audiovisual processing and transmission systems, and network-based control and monitoring functions.
(i) ICT has also change the way we shop. We now buy things online
(ii) ICT has changed the way we judge sports, how we watch them and also in some case’s how we competed in them.
(iii) Some ICT products has taken over lots of task like robot which is a product of ICT does some work for human.
Computer ethics is a part of practical philosophy which concern with how computing professionals should make decisions regarding professional and social conduct.
(i) keep your workstation area neat
(ii) surf safety
(iii) keep your files organized
(iv) Don’t shut down abruptly
(v) no food and drink
-It is a cheap medium of communication
-It does not give room for leakage of secret information by hackers
-It is easy to maintain. It requires less technical knowledge.
Software maintenance in software engineering is the modification of a software product after delivery to correct faults, to improve performance or other attributes.
-Adapts to a changing environment
-Predictive cash flow
I Ctrl + C
II Ctrl + S
III Ctrl + P
-Word processing packages
-Corel draw packages
-Excell processing packages
-Lotus word pro-windows
Keystroke: Ctrl + return,Ctrl + F,Ctrl +F2
Action: Page break,Find and replace,help,print preview
VI. SOCKET AC SOURCE
Ensure you use stabilizer when using the computer so that the power source will not be fluctuating.
II and III
Fig2. is a DVD diskette
Fig3. Is a magnetic tape diskette
The magnetic tape media is most suitable
A radio player
A radio player
Virtual sequential access method
By compressing the image sizes