4-bit

In 4 -bit architecture refers to the electronic data processing one of the following processor architectures:

  • Intel, the model 4004
  • NEC processor family uPD75X
  • Texas Instruments TMS1000 series

And various other designs.

In simplified terms means 4 bits that the processors are designed by their design so that 4 bits (ie 1/2 byte or 1 nibble) can be simultaneously processed or during a cycle. This includes the external and internal design of data and address buses, the execution of the set of registers and computing units with a.

Processors with 4 -bit architecture used in the 1970s, among other things, calculator, since the numbers 0 to 15 in binary encoding, but also the numbers 0 to 9 in the low to display modules called BCD coding feasible with this data size were.

Were also and they are used in many devices of household appliances (eg washing machines) and consumer electronics ( TV, VCR ) for easy control and monitoring tasks. While 'classical' 4-bit processors such as the Intel 4004 are still in use today hardly to processors such as the 4 - bittige processor family uPD75X NEC can still find in a variety of new household appliances. Most of these microprocessors are equipped with a variety of digital inputs and outputs, various timers and a real time clock including interface for direct control of LC displays.

Processor Architectures word width: 1 -bit architecture | bit-slice architecture | 4 -bit architecture | 8- bit architecture, | 16- bit architecture, | 32- bit architecture, | 64 -bit architecture

Processor instruction set architectures based on structure: CISC | EPIC | NISC | RISC | VLIW | microarchitecture

Processor architectures for optimization purposes: (main) processor | GPU | GPGPU | Sound Processor | Math Processor | Network processor | physics accelerator

  • Computer Architecture
  • Processor architecture
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