(a) An electronic book is made up of 500 pages and there are 16 lines of 24,000 bits line on each page.
Complete the space it will occupy on a computer in megabytes.
(b) Give an example of auxiliary storage.
(c) In the table below:
(i) List the two main types of computer software.
(ii) Give two examples under each in 4(c)i)
| main type | example |
| i | A |
| B | |
| ii | A B |
Explanation
a) First method 4.
Total number of pages = 50
Total number of lines per page = 16
Total number of bits per line = 24,000 bits
Total number of bits in a byte: 8 bits = 1 byte
On each page, there are: 2400 x 16 bytes = 48,000 bytes/page
For 500 pages, there are: 48,000 x 500 bytes
Conversion to Kilobyte = 24000000/1024 = 23437.5KB
Conversion to Megabyte = 23437.5/1024 = 22.89MB
The space occupied in megabyte is 22.89
Second method:
Total number of pages = 500
Total number of lines per page = 16
Total number of bits per lines = 24,000 bits
Total number of bits in a byte: 8 bits = 1 byte
A line in bytes = 24000/8 = 3000 bytes
16 lines = 16 x 3000 bytes = 48000 bytes
1 page in kilobytes = 48000/1024 = 46.875KB
Total space occupied = 500 x 46.875KB = 23437.5KB
Since 1024KB = 1MB
Then total space Occupied in Megabyte
23437.5KB /1024 = 22.8882MB
(b) Auxiliary Storage Hard disk / Hard drive, Compact Disc (CD), Digital Versatile Disc (DVD), Magnetic Tape, Floppy Disk/ Diskette, Pen Drive Flash Drive, Blue ray disk, Memory card or SD-card, Zip drive, Sim card.
(c)(i) Two main types of computer software System Software, Application Software.
(ii) Examples of System Software
1. Operating system: MS windows, Linux, Unix, Mac OSX, DOs, IOS, Novel.
2. Utility software: Virus scanner/ Anti-virus, Disk fragmenter, System monitor, File manager, Device driver, Disk cleaner.
3. Linker.
4. Language translator:Assembler, Interpreter and Complier
Examples of Application Software 1. Specialized software: Application Payroll Program Education Management Software, Accounting Soft- ware, Statistical Software, Web Design Software (e.g Facebook, Skype), etc.
2. Application packages: Microsoft office suite, Word processing, Graphics software, Game software, Database software, Spreadsheet software, Steam software (game), etc.