Difference Between Mouse and Trackball

Difference Between Mouse and Trackball Points : Difference Between Mouse and Trackball, comparison Between Mouse and Trackball, Mouse vs Trackball
Difference Between Mouse and Trackball
1.The mouse has to be moved when used.The track ball Is stationary.
2.A mouse consists of a metal or plastic housing or caring, a ball at its base and is rolled on a flat horizontal surface.You use a trackball by the rolling the ball with your palm and fingers.

Define Scanner and its types

Define Scanner and its types Points : define scanner and its types, flat bed scanner, handy scanner, sheet-feed scanner Scanner A scanner converts graphic and pictorial data to digital (binary) from which can be directly feed and stored in computer. The scanners are capable of digitizing not only shape and size of drawings but also varying intensities on a gray-to-black. They are used to scan more complex pictures and photographs. Now a days color scanner are also available.
There are three types of scanners.
Flat bed Scanner
Handy Scanner
Sheet-Feed Scanner

Short Notes

Short Note Points : short note on mouse, trackball, joystick, lightpen, microphone and digital camera Mouse: Mouse is also a primary input device but lacks the ability to easily transmit it textual information. It is also called pointing device that is used to move a pointer on the computer screen in order to point to a place on a display screen and to select one or more actions to be taken from the position.

Keyboard and divisions of keyboard

Keyboard and divisions of keyboard Points : keyboard and divisions of keyboard, division of keyboard, alphanumeric keypad, numeric keyboard, function keypad, screen navigation, or cursor movement keys, modifier keys Keyboard In most computers, a Key board is the primary text input device. It consists of a set of keys for computer input, which uses the same key arrangement as the mechanical and electronic typewriter keyboards that produced the computer, but with a few extra keys for computer commands and usually with the addition of a numeric keypad. The standard arrangement of alphabetic keys is known as the QWERTY (pronounced KWEHR-TEE) keyboard. The name is derived from the arrangement of five keys at the left of the upper first row of alphabetic key.

A standard key build includes about 100 keys and each key sends a different signals to the CPU. Keyboards for personal computers come in many different styles chat differ in size, number of keys and shape.

Bit, Byte and Nibble

Bit, Byte and Nibble Points : Define terms bit a byte and nibble Bit: The abbreviation of bit is binary digit which is non - addressable unit of memory. It is represented in terms of 0 and 1 or On/Off respectively. Byte: The combination or group of 8 bits is called a Byte.

Define the following terms

Define the following terms Points : define the following terms, memory word, memory address, mhz, mips, memory access time, flops, cycle time, viruses of the computer i. Memory Word
ii. Memory Address
iii. MHz
iv. MIPS
v. Memory Access Time
vii. Cycle Time
viii. Viruses of the computer

Function of ALU (Arithmetic Logic Unit in Computer)

Function of ALU (Arithmetic Logic Unit in Computer) Points : function of alu (arithmetic logic unit in computer) The ALU (Arithmetic Logic Unit): When the control unit encounters and instruction that involves arithmetic or logic operations, it passes control to the second component of CPU, the arithmetic/Logic unit (ALU). Arithmetic operations are as you might except, the fundamental math operations like addition, subtraction, multiplication and division.