Computer Information Systems Summary
Once upon a time, way back when in the caveman era, caveman used drawings on walls to keep track of information and to communicate with each other in the clan of one's life-span. Over time, man have improved and evolved in the way of keeping track of information and communicating with one another. Today, one finds himself more in an automated world than he did 25 years ago. When planning to purchase a computer, one must take in consideration all possibilities, options, and accessories that one could receive along with the computer. In this summary, we are going to examine some of the input, output, and storage devices along with speeds of a computer. You did a good job of getting the reader's attention and giving the reader a "road map" to your paper. Data Input Devices
When personal computers first came out, the only input device that was available was the keyboard and mouse. Today, there are more input devices to choose from than the basic keyboard and mouse combination. I would have combined these two sentences into a more complex single sentence. These devices are Voice-recognition or microphone, optical data readers, touch screens, magnetic ink character recognition (MICR), digital computer cameras, terminals, and scanners. In this section, this writer will identify what is the best method of data input to use in what situation and why. For printed questionnaires and telephone surveys, one would use the optical character recognition (OCR) reader device along with special software that would convert handwritten or typed documents into digital data. A bank uses a MICR device to read the information off a check quickly. Merchant's uses a bar-code scanner to read the bar-codes on retail tags of merchandise more quickly and accurately then a cashier can type in the amount by hand. For long documents, one may want to use a printer and scanner combination so one can scan the document as is without wasting time in trying to duplicate the document by free-hand method via keyboard and mouse. First, not sure why this word is here? is best to examine the situation and buy the best input device to accommodate the situation as we have seen in the above situations. Data Output Devices
The most common types of output devices are monitors which can come in the form of either Cathode Ray Tube (CRT) a bulky tube or Liquid Crystal Display (LCD) a Flat Screen; printers; and internal storage devices. We have more options to choose from which we can add to our existing system. These additions are external storage devices, plotters, software programs, other computer systems, and multi-functional printers that can print, scan, fax, and make copies in black and white or color. In this section we are going to explore some of these output options with situations and why. Hand-held computers, like the Palm Pilot, have a mini LCD screen along with internal storage memory that can be used by itself or can be hooked up by a connection cradle to a desk top computer to transfer information from the handheld to the desktop computer. Color photographs can be outputted to many places: (1) printed out from a good quality, color laser printer, (2) saved in the windows program under a pre-named file, or (3) saved on an internal or external device. One method is not any more important than the other; the outcome will depend on what one plans to do with the photographs. An interesting note, I found that more people are going back to the black and white photos instead of color. I recommend storing a resume in an external storage device, so one can have easy access to the data and one will not have to worry about losing that information if something happens to his computer. Depending on the importance of the memorandum, one should save the document in file folder on the computer with a back-up on an external-storage device and send the document off through the e-mail system to the other party....
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