Input and Output

Magnetic Ink Character Recognition (MICR)

• Type of font capable of recognition using magnetically charged ink.
• The technology allows computers to read information off printed documents.
• Unlikely barcodes or similar technologies, however, MICR codes can be easily read by human
• Commonly used to print checks, deposit slips, mortgage coupons, etc

Optical-Character recognition (OCR)

• The software used to convert letters and numbers that are non-editable into a format that can be editing.
• Example: A magazine article is something that cannot be editing.
• Can be accomplished by scanning
• Convert article into a Microsoft Word document and then be able to change any of the words.
• Typical uses include processing checks, archiving library material, and letter sorting by the postal office.

Optical-Mark Recognition (OMR)

• The process of capturing human-marked data from document form such as survey, test, questionnaires & ballots
• Scans a printed form and read predefined positions and records where marks are making on the form.
• Useful for application in which large numbers of hand-filled forms need to be processing quickly & with great accuracy
• Common application is use of “bubble sheets” of multiple-choice tests used by school.

Dot-matrix printer

• Also call impact matrix printer
• Produce characters and illustrations by striking pins against an ink ribbon to print closely spaced dots in the appropriate shape, much like typewriter.
• The moving portion of the printer is calling the print head.
• This machines can be highly durable
• Vary in 2 important characteristics: Speed , Print Quality
• Even with tungsten blocks and titanium pawls, the printing becomes too unclear to read

Plotter

• A vector graphics-printing device to print graphical plots that connects to a computer
• Plotter differs from printers in that they draw lines using a pen.
• There are two types of main plotter: pen plotter, electrostatic plotter.
• Multicolor plotters used in engineering applications where precision is mandatory.

Photo printer

• A printer that is specifically designed to print high quality digital photos on photo paper
• Have a high number of nozzles
• Capable of printing droplets as small as 1 Pico liter

Portable printer

• As electronics miniaturizes and increases in quality, new novelties are cropping up.
• Can print from camera phones, digital camera or memory card

Fax Machine

• Telecommunications technology used to transfer copies of documents
• That can send or receive pictures and text over a telephone line
• Electronically, a bit that has a value of either zero (off) or one (on) represents each dot.
• The incoming data, translates the zeros and ones back into dots, and reprints the picture.

Multifunctional Device

• An office machine which incorporates the functionality of multiple devices in one
• Bring the worlds of copying, printing, finishing, and scanning together, all in one neat, efficient and cost-effective package.

Internet Telephones

• Service instantly and how to display your call details on the web
• Covered are the advanced features and services including intelligent call forwarding, unified email and voice mail messaging, and the simultaneous sending of voice.

Voice Over Internet Protocol (VOIP)

• A general term for a family of transmission technologies for delivery of voice communication over IP
• VOIP systems employ session control protocol to control the set-up and tear-down of calls as well as audio codes which encode speech allowing transmission over an IP network as digital audio via an audio stream.
• Codec use is varied between different implementations of VOIP; some implementations rely on narrowband and compressed speech, while others support high fidelity stereo codecs.