We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Computers and information processing - Essay Example

Source data entry devices refer to the many forms of data entry devices that are not keyboards, including pointing devices, scanning devices, magnetic stripes, smart cards, voice recognition devices, audio input, video input, and digital camera. Data source is usually on magnetic media or paper or fed directly into the processor. Pointing devices include mouse, trackball, touchpad, joystick, pen input, touch screen, light pen, and digitizer. Scanning devices include image scanners, optical readers, bar code readers, optical mark recognition, optical character recognition, magnetic ink character recognition, and fax machines. If the printed questionnaires are multiple choice questions answered using pencil marks, optical mark recognition is the best method. Optical mark recognition technology scans the printed questionnaire, detects the presence of marks, and transfers this information to the processor. In the case of telephone surveys, audio boards work best because such devices recognize the human voice and transform it into digital signals to be processed by the computer processor. An audio board is an add-on circuit board that converts analog sound to digital sound and stores it for further processing. To capture the check number at the bottom of the check, magnetic ink character recognition, a type of optical reader, is the best method because the check numbers on checks are printed with magnetic ink. (Williams, Sawyer, & Hutchinson, 1997). As for retail tags, bar code readers

Check these samples - they also fit your topic

Peoples Dependence on Computers

The paper tells that since the invention of computers, people have using them in a wide range of activities. Computers are used in schools, hospitals, businesses, and homes among other places. This has led to people becoming too dependent on them. The computers are involved in many aspects of life. The over dependence on computers have robbed people the opportunity to mingle with others.

7 pages (1750 words)Essay
Information Processing Theory
This theory claims that computers and human mind share a similar mechanism of processing information. It also asserts that new information going through to the brain is initially analyzed and put to a test of benchmarks before storage in memory vestibules.
4 pages (1000 words)Research Paper
Social information processing theory
Through communication people gain a better understanding of who they are, who people around them are and what is involved in their immediate environment and so it is said that communication is essential for human survival. Due to its importance and necessity perhaps, there has been a number of mediums through sociologists and other scientists have devised forms of communication.
4 pages (1000 words)Essay
Social Information Processing Theory
Social Presence Theory asserts that CMC, being text-based, cannot provide the same quality of human interaction because of the lack of physical presence in online communications. As a result, CMC communication becomes impersonal and focused on tasks and individualization.
4 pages (1000 words)Essay
Compare and contrast the Piagetian,Vygotskian and information Processing theories of cognition. To what extent can these theorie
The most famous theories that have been advanced to explain children’s cognitive behaviors during developmental stages include the Piagetain theory, Vygotskian theory and the Information Processing (IP) theories. Jean Piaget (1896-1980) proposed the Piagetian theory (Bajic & Rickard, 2011).
8 pages (2000 words)Essay
Information Processing
Like energy, indeed, information has become ubiquitous as a commodity and, like energy, inescapable as an idea. The thesis that the human mind is nothing more than an information-processing device is now widely regarded as a fact. (Berlinski 2001, p. 17)
3 pages (750 words)Essay
Critically evaluate information-processing accounts of cognitive development
The teachers who, by and large, bored Jean Louise Finch (the narrator of To Kill a Mockingbird) basically to death throughout her years in school must have wondered why such a bright student appeared so uninterested in her general surroundings. The ways in which
13 pages (3250 words)Essay
Module: Human information processing
Recognizing the changes in your surrounding such as people trying to cross the street, the car behind you, changing red light to green, and many other transformation help us to adjust in a certain way and act accordingly. There many issues involving change-detection
10 pages (2500 words)Essay
Information Processing Theory
One of the theories that were developed in the last century and ranks as one of the best is information processing theory. It is the theory of
7 pages (1750 words)Essay
Examples of software are Operating System and Application Packages e.g. Word Processors etc. Network interface is the connectivity and communication between
3 pages (750 words)Essay
capture data most accurately because most retail stores use bar codes on retail tags. A bar code consists of a set of vertical lines and spaces of different widths. The code can be translated into a 10-digit number that identifies the product manufacturer and the product number (Williams, Sawyer, & Hutchinson, 1997). Lastly, as for long documents, the best method of data input that would ensure accuracy is the image scanner. The image scanner converts the long document into digital format usable by the computer processor (Williams, Sawyer, & Hutchinson, 1997).
There are six main methods of data output. They are display screens, printers, audio-output devices, video-output devices, virtual reality devices, and microfilm (Carthy, n.d.). Display screens include monitors, cathode ray tubes, and flat panel displays. Printers could be either impact printers or non-impact printers (Williams, Sawyer, & Hutchinson, 1997).
The best method of output for handheld computers is flat panel displays because they are thin, light, and power saving (Williams, Sawyer, & Hutchinson, 1997). The best method of output for color photograph is thermal printers because they produce very high quality color printing. Alternatively, it is the trend to use softcopy output nowadays. Web sites for photo storage abound (see for example Flickr, 2006; Microsoft, 2006). A black and white inkjet printer will do for resumes since resumes do not contain colorful graphics and the quality, though lower than that of a thermal and laser printer, should suffice. As for memorandum, handwritten messages on post-it notes are convenient. Statistical reports contain graphs, tables, charts, and words. Hence, color laser printers are the best method of output. Lastly, company reports are often stored on microfilms to save space. However, for the convenience of the audience, that is, the investors, companies might publish them on the Internet in the form of soft copy.
Primary storage is random access memory that the central processing unit can access directly without the use of input and output devices. Secondary storage is memory that the


There are two main methods of data input. The first method is keyboard entry and the second method is source data entry. Keyboard entry converts characters like numbers and letters to electrical signals to be used by the computer’s processor. …
Author : pschamberger
Download 0
Computers and information processing
Read TextPreview
Comments (0)
Click to create a comment
Let us find you another Essay on topic Computers and information processing for FREE!
Contact us:
Contact Us Now
FREE Mobile Apps:
  • About StudentShare
  • Testimonials
  • FAQ
  • Blog
  • Free Essays
  • New Essays
  • Essays
  • The Newest Essay Topics
  • Index samples by all dates
Join us:
Contact Us