(a)(i) With the aid of a simple diagram, explain information transmission.
(ii) Give one example of information transmission.
(b) Give one example of each of the following;
(i)single user single tasking operating system.
(ii) single user multitasking operating system.
(iii) multi user operating system.
(c) List four features of a Graphical User Interface.
Explanation
3(a)(i)
Information transmission is the process of sending information from one point to another through a channel.
(ii) Example; Printing of document; classroom instruction, receiving radio signals; DSTV signals, Telegraph, GSM, Photography, Fascimile, Town Crying, Smoke Message, Use of Birds, Story Telling, Signs/Signals, Internet, Satellite signals, Blowing Horns, Drum Beating, Fire lightening e.t.c
(b) (i) DOS, OS 2, PC-DOS,Palm.
(ii) MS Windows, Mac-OS, Linux.
(iii) Xenix, Zenix, Unix, Linux, Mac OS, VMS, Mainframe OS.
(c) Features of a Graphical User Interface (GUI) are; Windows, Icons, Menus, Pointing device (mouse).