Back

ⓘ NCR-340. The NCR-340 was NCRs first line High Speed 300-line-per-minute computer printer. It used a 3-inch-diameter drum made up of 120 hardened steel discs wit ..




                                     

ⓘ NCR-340

The NCR-340 was NCRs first line "High Speed" 300-line-per-minute computer printer. It used a 3-inch-diameter drum made up of 120 hardened steel discs with the upper-case alphabet, the numbers 0-9 and a few special symbols. The discs were keyed on an armature, but could be changed if a character were damaged.

The drum sat above an 18-inch-wide 460 mm ink ribbon. Below the ribbon the green-bar continuous form paper was moved into and out of the printer head on four tractor assemblies. Below the paper path were a set of 120 or 132" hammers” that were triggered by electric solenoids.

Each line of a report was sent from the 315 to the printer and loaded into a buffer. As the print drum spun, a glass timing disc on one end would indicate to the internal logic that a character was in position to be printed. All of the" A” characters in the buffer would trigger the appropriate hammer to fire. The hammer would force the paper up against the ribbon, and hit the" A” character on the spinning drum for its position in the line. This would continue for one revolution of the drum printing.

The printer could print up to eight copies of a report by using carbon paper between each layer of paper. There was a whole industry and series of auxiliary machine collators that would separate the different copies of the report and remove the carbons. Then the continuous reports were sent through a burster to separate individual pages.

                                     
  • The NCR Century 100 was NCR s first all integrated circuit computer built in 1968. All logic gates were created by wire - wrapping NAND gates together to
  • The NCR Voyager was an SMP computer platform produced by the NCR Corporation circa 1985. Linux support for some models existed between 2005 and 2010. Bottomley
  • invented by NCR which first appeared on their model NCR - 315 mainframe computer in 1962. It was also available for NCR s third generation NCR Century series
  • can t handle men. In 1912, NCR was found guilty of violating the Sherman Antitrust Act. Patterson, Watson and 26 other NCR executives and managers were
  • was a brand name for a family of wireless networking technology sold by NCR AT T, Lucent Technologies, and Agere Systems as well as being sold by other
  • triggering receptor 2 is a protein that in humans is encoded by the NCR 2 gene. NCR 2 has also been designated as CD336 cluster of differentiation 336
  • 29, 1919 was president and chairman of the National Cash Register Corp NCR from 1972 to 1984. Anderson was born in 1919 in Wuhan in Central China and
  • triggering receptor 1 is a protein that in humans is encoded by the NCR 1 gene. NCR 1 has also been designated as CD335 cluster of differentiation, NKP46
  • triggering receptor 3 is a protein that in humans is encoded by the NCR 3 gene. NCR 3 has also been designated as CD337 cluster of differentiation 337

Users also searched:

...
...
...