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RADIX 50 (also called Radix 50 8 format [2]) was used in Digital's 18-bit PDP-9 and PDP-15 computers to store symbols in symbol tables, leaving two extra bits per 18-bit word ("symbol classification bits").
DECtape, originally called Microtape, is a magnetic tape data storage medium used with many Digital Equipment Corporation computers, including the PDP-6, PDP-8, LINC-8, PDP-9, PDP-10, PDP-11, PDP-12, and the PDP-15. On DEC's 32-bit systems, VAX/VMS support for it was implemented but did not become an official part of the product lineup.
Digital Equipment Corporation (DEC)'s PDP-10, later marketed as the DECsystem-10, is a mainframe computer family [1] manufactured beginning in 1966 [2] and discontinued in 1983. [3] [4] [5] 1970s models and beyond were marketed under the DECsystem-10 name, especially as the TOPS-10 operating system became widely used. [a]
A PDP-9 on display at ACONIT in Grenoble, France. The PDP-9, the fourth of the five 18-bit minicomputers produced by Digital Equipment Corporation, was introduced in 1966. [1]: P.10 A total of 445 PDP-9 systems were produced, [2] of which 40 were the compact, low-cost PDP-9/L units. [3]
The PDP-6, short for Programmed Data Processor model 6, is a computer developed by Digital Equipment Corporation (DEC) during 1963 and first delivered in the summer of 1964. [ 1 ] [ a ] It was an expansion of DEC's existing 18-bit systems to use a 36-bit data word, which was at that time a common word size for large machines like IBM mainframes .
Of the 12 bits in each word, exactly 3 were used for instruction op-codes. [13] [15] The PDP-5's instruction set was later expanded in its successor, the PDP-8. The biggest change was that, in the PDP-5, the program counter was stored in memory location zero, while on PDP-8 computers, it was a register inside the CPU.
2,3,5,6-Tetrachlorophenol (2,3,5,6-TCP) is a chlorinated derivative of phenol with the molecular formula C 6 H 2 Cl 4 O. References. Cited sources Haynes, William M ...
Both the PDP-1 and the PDP-4 were introduced as paper tape-based systems. [6] The only use, if any, for IBM-compatible 200 BPI or 556 BPI magnetic tape [7] was for data. The use of "mass storage" drums - not even a megabyte and non-removable - were an available option, but were not in the spirit of the “personal” or serially shared systems that DEC offered.