ibm 2741 การใช้

• One popular example was the IBM 2741 terminal.
• For example, the popular IBM 2741 communications terminal supported a variety of character sets of up to 88 printing characters plus control characters.
• This was used on paper printing terminal workstations using the Selectric typewriter and typeball mechanism, such as the IBM 1050 and IBM 2741 terminal.
• One, the IBM 2741, was based on the IBM Selectric typewriter . talk ) 20 : 27, 19 January 2014 ( UTC)
• The IBM-released version of CPS was designed to run on the IBM 1050 terminal and the IBM 2741 terminal with the " break feature ".
• The readily available 103A2 gave an important boost to the use of remote low-speed terminals such as the Teletype Model 33 ASR and KSR, and the IBM 2741.
• The IBM 2741 terminal was a popular example of a Selectric-based computer terminal, and similar mechanisms were employed as the console devices for many IBM System / 360 computers.
• In most applications the least significant data bit ( the one on the left in this diagram ) is transmitted first, but there are exceptions ( such as the IBM 2741 printing terminal ).
• The two varieties of IBM 2741 used different character codes on the serial interface as well, so software in the host computer needed to have a way to distinguish which type of machine each user had.
• One widely used practical application of such linkages was in the IBM Selectric typewriter ( and the IBM 2741 derived from it ), where they summed binary mechanical inputs to rotate and tilt the type ball.
• Both products used the Digital Equipment Corporation PDP-8 mini computer, DECtape ( 4 reel ) randomly accessible tape drives, and a modified version of the IBM Selectric typewriter ( the IBM 2741 Terminal ).
• IBM also produced computer terminals based on the Selectric mechanism, some of which ( all models of the IBM 1050 series, and IBM 2741 models using " PTTC / BCD " code ) used a different encoding.
• IBM offered a  terminal version of the Selectric for use as a computer console I / O device and the IBM 2741 Terminal, that offered significant advantages over the Teletype and Flexowriter terminals in general use at that time.
• The character set for the APL programming language includes several characters that were printed by overstriking other characters on printing terminals such as the IBM 2741, for example the functions = # and ?" may be used to reverse the elements of an array.
• CPS support for the IBM 2741 " break feature " most likely influenced the eventual user group support for the " break feature " and the IBM 1050 terminal on IBM Administrative Terminal System ( ATS / 360 ), as many IBM customers which operated CPS also operated ATS / 360.
• For such purposes, printer terminals such as IBM 2741 printer, using the traditional asynchronous serial communication ( start-stop signaling ), and display terminals such as IBM 2260 and IBM 3270, using the new communications protocol set ( Binary Synchronous Communications or BSC ), became available.
• Over time, several different technologies were developed including automating ordinary typebar typewriter mechanisms ( such as the Friden Flexowriter ), daisy wheel printers ( dating from a 1939 patent, but brought to life in the 1970s by Diablo engineer David S . Lee ) where the IBM Selectric mechanisms such as the IBM 2741 terminal ).
• This standard is also referred to as " little endian . " Also possible, but rarely used, is " big endian " or MSB ( Most Significant Bit ) first serial communications; this was used, for example, by the IBM 2741 printing terminal . ( See Bit numbering for more about bit ordering . ) The order of bits is not usually configurable within the serial port interface.