Search results
Results from the WOW.Com Content Network
The IBM 1416 is an interchangeable train cartridge introduced with the 1403-N1 and also used with the IBM 3203. This means instead of using a chain of linked characters, the printer uses a train of unlinked characters. The cartridge allows the operator to change the font and/or character set arrangement being used by the printer.
Released in 1959, the IBM 1403 Model 1 is the first hammer based printer produced by IBM. It uses type slugs on a chain and is the first IBM printer to do so. In 1967 the IBM 1403 Model N1 is the first IBM printer to use a train rather than a chain. This change is made because it is not possible to achieve higher speeds using a chain.
Line printers are mostly associated with unit record equipment and the early days of digital computing, but the technology is still in use. Print speeds of 600 lines per minute [2] (approximately 10 pages per minute) were achieved in the 1950s, later increasing to as much as 1200 lpm. Line printers print a complete line at a time and have ...
IBM defined two sets of printer commands, and therefore two sets of printer control characters are available. The first set of commands did not send any data to be printed to the printer but only a paper movement instruction. These are called immediate commands. The second set of commands send data to be printed on the current line plus a paper ...
IBM provided several models compatible (or nearly so) with the 1401. 1460 is twice as fast, and many special features of 1401 were standard. 1440 was a popular lower-cost alternative, although not fully compatible with the 1401.
In such installations, with an IBM 7090 for example, the mainframe computers used only magnetic tape for input-output. It was the 1401 that transferred input data from slow peripherals (such as the IBM 1402 Card Read-Punch) to tape, and transferred output data from tape to the card punch, the IBM 1403 Printer, or other peripherals. This allowed ...
The 200-series I/O instructions were a Peripheral Data Transfer (PDT) and a Peripheral Control and Branch (PCB) [15] that explicitly implemented asynchronous I/O. The PDT specified a device address, a buffer address and the transfer operation to be started, while the PCB specified a device address, a branch address and set the operating mode or ...
The 6000-series machine's basic instruction set has more than 185 single-address one-word instructions. [11] The basic instructions are one word; the instruction format is an extension of that of the GE-600 series, with the opcode field extended to 10 bits by adding bit 27 as the low-order bit; that bit is zero in all GE-600 series instructions.