What are the functions of different hardware components and software requirements of a computer?

Explanation

The hardware components of a computer include the following:
a. A Central Processing Unit and Storage System: It facilitates the execution of program instructions for processing data and controlling peripheral equipments.
All data together with the operating system and the application programs occupy space in disk storage unit which functions as working memory.
b. A Grphic Display Sub system: A graphic display system or monitors serves as the user.s prime visual communication medium in all computers. A high resolution display system wiht a greater rante of possible display colours and Look up Table (LUT) for rapid alteration of colour patterns is generally preferred in graphic and mapping applications.
c. Input Devices. The instruction and the statistical data are entered into the computeer using the keyboard functions. The keyboard is an important input device that resembles with a typewriter. It has various keys for different purposes.
d. Out Devices: The output devices include a variety of printers such as ink jet, laser and colour laser printers, and the plotters that are available in different sizes ranging from A3 to A0 size.
Computer Software Requirements.
Computer Software: It is a written program that is stored in memory. It performs specific functions as per the instructions given by the user.
a. The Data Entry and Editing Modules: These inbuilt modules in the data processing and maping software facilitate the data entry system interface, database creation, error removal, scale and projection manipulations, their organisation and maintenance of the data.
b. Coordinate Transformation and Manipulation Module: The present day softwares provide a wide range of capabilities used to create layers of spatial data, coordinate transformation, editing and linking the spatial data sets with the related non spatial attributes of data.
c. Data Display and Output Modules: The data display and output operations vary over a range of functions and are very much dependent on the skills developed in the field of computer graphics. Some of the common capabilities that the present day softwares provide are:
Zooming/Windowing to display of selected areas and scale change operation
Colour assignment/change operation
Three dimensional and perspective display
Selective display of various thems
Ploygon shading, line styling and point markers display
Output device interface commands for interfacing with plotter devices/ printers
Graphic User Interface (GUI) based menu organisation for an essay interface