(a) An electronic book is made up of 500 pages and there are 16 lines
(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.