MCS-4

E660932

MCS-4 was Intel’s first commercial microprocessor chipset, a pioneering 4-bit microcomputer system that included the Intel 4004 CPU and its supporting chips.

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Statements (47)

Predicate Object
instanceOf microcomputer system
microprocessor chipset
addressBusWidth 12-bit program addressing (via 4004)
architecture Harvard architecture (separate program and data memory) NERFINISHED
bitWidth 4-bit
category 4-bit microprocessor family
early microprocessor system
clockFrequency ~740 kHz (typical for 4004)
commercialStatus first commercial microprocessor chipset by Intel
controlSignals 4-phase clocking scheme
dataBusWidth 4-bit data bus
designGoal replace custom logic with programmable processor
developer Intel NERFINISHED
documentation Intel MCS-4 Micro Computer Set User’s Manual NERFINISHED
hasCentralProcessingUnit Intel 4004 NERFINISHED
hasProgramROM Intel 4001 NERFINISHED
hasRAM Intel 4002 NERFINISHED
hasShiftRegister Intel 4003 NERFINISHED
historicalSignificance one of the earliest single-chip CPU-based systems
includes Intel 4001 NERFINISHED
Intel 4002 NERFINISHED
Intel 4003 NERFINISHED
Intel 4004 NERFINISHED
instructionCycleTime ~10.8 µs at 740 kHz (via 4004)
instructionSetType CISC
instructionSetWidth 8-bit instructions
intendedUse embedded control applications
introductionYear 1971
logicFamily PMOS
marketedAs Intel MCS-4 Micro Computer System NERFINISHED
marketedBy Intel Corporation NERFINISHED
marketRegion worldwide
maxDataMemory 640 bytes RAM (via 4002 chips)
maxProgramMemory 4 KB ROM (via 4001 chips)
maxRAMChipsSupported 16 Intel 4002 RAMs
maxROMChipsSupported 16 Intel 4001 ROMs
notableApplication Busicom calculator systems NERFINISHED
packaging 16-pin and 18-pin DIP packages (family dependent)
powerSupply +15 V
predecessor none (first Intel microprocessor family)
successor Intel 8008-based systems
Intel MCS-8 NERFINISHED
technologyNode 10 µm process (approximate)
usedIn calculators
simple controllers
terminals
wordLength 4 bits

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

Intel 4001 ROM chipSetName MCS-4
subject surface form: Intel 4001