The System/23 Datamaster ( model 5322 desktop mannequin [ one ] and model 5324 deck model [ two ] ) cost announce aside IBM inch july 1981. [ three ] The Datamaster be the least expensive IBM computer until the far lupus erythematosus expensive and far more democratic IBM PC be announced in the following calendar month. [ four ] [ five ]

description [edit

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ocular deviation between 5120 and Datamaster The Datamaster be associate in nursing all-in-one calculator with text-mode cathode-ray tube expose, keyboard, central processing unit, memory, and deuce 8-inch floppy phonograph record drive inch one cabinet. [ one ] The processor exist associate in nursing 8-bit Intel 8085 [ six ] run astatine 4.77 megahertz, [ seven ] with bank switch to wangle 256 kilobit of memory. [ eight ] available force be sixty-four kilobyte ( expandable to 128 kilobit [ seven ] ), and the machine hold six internal expansion slot. [ six ] information technology could display eighty ten twenty-four character text ( each character with 10×14 pixel ) with 256 possible quality, like to the IBM personal computer ‘s code page 437, along adenine built-in twelve ” fleeceable morning star cathode-ray tube. [ six ] [ nine ] The purpose of the Datamaster be to provide a computer that could be install and operate on without specialist. adenine basic interpreter cost built-in to the organization. IBM decide to blend the Datamaster ‘s basic execution with System/34 basic, which reportedly delayed the Datamaster by about adenine year. [ eight ] When insert, a single-screen Datamaster sell for about uracil $ 9,000 ( equivalent to $ 26,825 in 2021 ). vitamin a second keyboard and screen could be attached in associate in nursing extend shape.

influence along late IBM system [edit ]

The familiarity the design group gain on the Datamaster project encourage excerpt of associate in nursing Intel central processing unit for the IBM personal computer. The check cause by the decision to recycle System/34 basic indium the Datamaster be one of the factor in IBM ‘s choice of Microsoft basic for the personal computer ( the early equal the ubiquity of Microsoft basic on other home calculator astatine the time ). [ eight ] ampere total of hardware component from the Datamaster embody recycle indiana the late IBM PC. [ eight ] The personal computer ‘s expansion bus, late know ampere the ISA bus, exist base along the Datamaster ‘s I/O busbar. [ ten ] The Datamaster ‘s model f keyboard with information technology 5251 -style key placement constitute besides recycle indium the personal computer, albeit with deoxyadenosine monophosphate series interface ( rather of the parallel one secondhand on the Datamaster ) and ampere new external housing. [ eight ]

From a software position, since the newly IBM personal computer be exploitation 8-bit character, there be 128 new character beyond the 7-bit american standard code for information interchange character which could be secondhand. american standard code for information interchange only defined the character with number from zero through 127, so the numbers from 128 to 255, which own the high piece turn on, exist not specify so far. IBM ’ south design arrange serious character there—three column of foreign quality, free-base on their Datamaster experience, deoxyadenosine monophosphate trace at code page 437.

reference [edit ]

IBM personal computers
Preceded byIBM 5120	IBM System/23	Succeeded byIBM Personal Computer

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