![]() ![]() Therefore, they are used in conjunction with a keyboard. The movement of the mouse along the x-axis helps in the horizontal movement of the cursor and the movement along the y-axis helps in the vertical movement of the cursor on the screen. There are two or three depression switches on the top. Keyboard is not suitable for graphics input.Ī Mouse is a pointing device and used to position the pointer on the screen.Function keys are a fast and effective method of using commands, with fewer errors.Buttons and switches are used to enter predefined function values. Special purpose keyboards are available having buttons, dials, and switches.Keyboards are available with special features line screen co-ordinates entry, Menu selection or graphics functions, etc.Alphanumeric Keyboards are used in CAD.Numeric Keyboard: It is on the right-hand side of the keyboard and used for fast entry of numeric data.B.A Multimedia & B.A Animation and Graphic Design(I to VI Semester). Alphabetic keys: a to z (lower case), A to Z (upper case) MCA 503 COMPUTER GRAPHICS MCA 504 DATA MINING.The keyboard has alphabetic as well as numeric keys. A keyboard with 101 keys is called a QWERTY keyboard. The data is entered by pressing the set of keys. The most commonly used input device is a keyboard. Output can be text, numeric data, line, polygon, and other objects. Output device display data from the memory of the computer. The data can be in the form of text, graphics, sound, and text. Its measure is unit in length or number of pixels.The Input Devices are the hardware that is used to transfer transfers input to the computer. Aspect Ratio: It is the ratio of width to its height. Resolution: Use to describe the number of pixels that are used on display image.ģ. Besides color, a major difference between phosphor in their persistence how they continue to emit light after the electron beam is removed.Ģ. Different kinds of phosphors are available for use in CRT. Persistence: Persistence is the duration of phosphorescence. As frame buffer is a digital device write raster CRT is an analog device.ġ.∵ A memory bit has only two states (binary 0 or 1), a single bit plane yields a black and white (monochrome display).The picture is built up in the frame buffer one bit at a time.Graphics & Multimedia Business Accounting MIS Gaming and ERP Software etc. This amount of memory is called a bit plane. Computer Fundamentals DCA Notes in Hindi (New 2018). At a minimum, there is 1 memory bit for each pixel in the raster. ![]() ![]()
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