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Chapter 2 Computers - Coggle Diagram
Chapter 2 Computers
Program language
The language selected depends on the problem which needs to be solved as well as the type of computer being used
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Networks
WAN
Spread over several cities, states and even countries and are usually owned by multiple parties
MAN
Is designed for data communication between various organisations in a city, and sometimes between nearby cities
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Software
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Application software
E.g.
-Word processing - MS word
-Data basis - MS Access
-Spreadsheets - MS Excel
-Project management - MS projects
-Desktop publishing - Adobe
-Financial - Pastel
-Presentation - MS powerpoint
-Graphs - MS Excel
-Computer aided design
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Measuring computer speed
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Storage and retrieval:
-Storage = saving data in computer memory.
-Retrieval = accessing data from memory
-Data is stored in bits
-A bit = single value of 0 or 1
-8 bits = 1 byte
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Network storage
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Network-attached storage
Network-connected computer dedicated to providing file-based data storage services to other network devices
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What is a computer:
-Machine
-Accepts data which is entered into the machine
-Process - the data is entered without human assistance by means of instructions which are stored.
-Supplies information requested