What is the full form of LED? Light Emitting Diode Liquid Emitted Diode Both a & b Light Emitter Diode None The use of tab key in the keyboard is? To move a cursor across the screen To move the cursor down the screen Both a & b To indent a paragraph None Which of the following is/are input devices? Scanner Track ball Touch screen All of the above None Wireless mouse communicates through? Microwaves Radio waves Infra red wave Electromagnetic signal None Which keyboard key we use to make characters either upper or lower case? ESC Shift Return Both a & c None Time's up Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
