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Yellow dots on white paper, produced by color laser printer (enlarged, dot diameter about 0.1 mm) Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the specific device that was ...
It means that the printer is trying to print a document that needs "Letter size" (8½ × 11 in.) paper when no such paper is available. [3] Early LaserJet models used a two-character display for all status messages. This printer is showing "00", for normal status. Paper out in the upper cassette would be indicated by alternating "11" and "UC".
There is a mechanical bell, activated by code 07 (Control-G, also known as BEL), to draw special attention when needed. The Teletype Model 33, including the stand, stands 34 inches (860 mm) high, 22 inches (560 mm) wide and 18.5 inches (470 mm) deep, not including the paper holder.
Though tickers punched the bell codes into their tapes, [1] printers generally do not print a character when the bell code is received. Bell codes are usually represented by the label "BEL". They have been used since 1870 (initially in the Baudot code). [2] To maintain backward compatibility, video display terminals (VDTs) that replaced
If no hardware code page(s) are specified, these drivers default either to a dummy code page number 999 [1] [23] [24] or assume the hardware code page to be equal to the primary code page (the first code page listed in COUNTRY.SYS files for a particular country [27] with the country code either specified in the CONFIG.SYS COUNTRY directive or ...
Morkrum Model 11 Tape Printer – The Model 11 Typewheel Tape Printer, at about 45 words-per-minute, was a bit faster the Morkrum Printing Telegraph Blue and Green-Code printers, and was modeled after the European Baudot Telegraph System printer. The Model 11 was a Tape Printer which used gummed paper tape that could be pasted onto a telegram ...
HP 9815A. Chronologically, the models of the family were: HP 9810A, a keystroke programmable computer with magnetic cards and LED display, introduced in 1971, [1]; HP 9820A, introduced in 1972, was the first HP model that deals with algebraic input (not only RPN) [2] featured a high level language simpler than BASIC that was later named high performance language (HPL),
The back of a Teletype Model 33 teleprinter with a Bell 101C Data Set in the pedestal, 1963.. The Bell 101 Data Set was the first commercial modem for computers, released by AT&T Corporation in 1958 for use by SAGE, and made commercially available in 1959, shortly after AT&T's Bell Labs announced their 110 baud modulation frequencies.