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Comb printers, also called line matrix printers, printed a matrix of dots instead of individual characters in the same way as single-character dot matrix printers, but using a comb of hammers to print a portion of an entire row of pixels at one time (for example, every eighth pixel). By oscillating the comb or "print shuttle" left and right a ...
A virtual printer is a piece of computer software whose user interface and API resembles that of a printer driver, but which is not connected with a physical computer printer. A virtual printer can be used to create a file which is an image of the data which would be printed, for archival purposes or as input to another program, for example to ...
A computer printer is a computer peripheral device that produces a hard copy (permanent human-readable text and/or graphics usually on paper) from data stored in a computer connected to it. A virtual printer is a piece of computer software whose user interface and API resemble that of a printer driver, but which is not connected with a physical ...
Printer Notes: In HP printers introduced since ca 2006, alpha codes indicate product groupings and optional features, thus for example: [3] * Lead alpha codes: A – HP Photosmart Axxx Compact/Portable photo printer
A laptop computer or notebook computer, also known as a laptop or notebook, is a small, portable personal computer (PC). Laptops typically have a clamshell form factor with a flat-panel screen on the inside of the upper lid and an alphanumeric keyboard and pointing device on the inside of the lower lid.
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The storage of computer programs is key to the operation of modern computers and is the connection between computer hardware and software. [7] Even prior to this, in the mid-19th century mathematician George Boole invented Boolean algebra —a system of logic where each proposition is either true or false.