4-bit - Citizendia

Processors
4-bit	8-bit	12-bit	16-bit	18-bit	24-bit	31-bit	32-bit	36-bit	48-bit	64-bit	128-bit
Applications
8-bit			16-bit			31-bit	32-bit			64-bit
Data Sizes
4-bit	8-bit		16-bit				32-bit			64-bit	128-bit
nibble byte octet word dword qword

In computer architecture, 4-bit integers, memory addresses, or other data units are those that are at most 4 bits wide. Eight-bit CPUs normally use an 8-bit data bus and a 16-bit address bus which means that their Address space is limited to 64 KBs This is not a "natural Possibly the most well-known 18-bit computer architectures are the PDP-1, PDP-4, PDP-7, PDP-9 and PDP-15 Minicomputers produced The IBM System/360, announced in 1964, was an extremely popular computer system with 24-bit addressing and 32-bit general registers and arithmetic Perhaps the only computing architecture based on 31-bit addressing is one of computing's most famous and most profitable The range of Integer values that can be stored in 32 bits is 0 through 4294967295 or −2147483648 through 2147483647 using Two's complement encoding Many early computers aimed at the scientific market had a 36- Bit word length. Computers with 48-bit words include CDC 1604 and BESM-6. The IBM AS/400, in its CISC variants is a 48-bit addressing system '64-bit' CPUs have existed in Supercomputers since the 1960s and in RISC -based workstations and servers since the early 1990s. A 32-bit application is Software that runs in a 32-bit flat Address space (a Flat memory model) '64-bit' CPUs have existed in Supercomputers since the 1960s and in RISC -based workstations and servers since the early 1990s. A nibble (often nybble) is the Computing term for a four- Bit aggregation or half an octet (an octet being an 8-bit Byte A byte (pronounced "bite" baɪt is the basic unit of measurement of information storage in Computer science. A nibble (often nybble) is the Computing term for a four- Bit aggregation or half an octet (an octet being an 8-bit Byte A byte (pronounced "bite" baɪt is the basic unit of measurement of information storage in Computer science. In Computing, an octet is a grouping of eight Bits Octet, with the only exception noted below always refers to an entity having exactly eight In Computing, " word " is a term for the natural unit of data used by a particular computer design In Computing, " word " is a term for the natural unit of data used by a particular computer design In Computing, " word " is a term for the natural unit of data used by a particular computer design In Computer engineering, computer architecture is the conceptual design and fundamental operational structure of a Computer system In computer science the term integer is used to refer to a Data type which represents some finite subset of the mathematical Integers These are also known as In Computer science, a memory address is an identifier for a memory location at which a Computer program or a hardware device can store a piece of data Debt AIDS Trade in Africa (or DATA) is a Multinational non-government organization founded in January 2002 in London by U2 's A bit is a binary digit, taking a value of either 0 or 1 Binary digits are a basic unit of Information storage and communication Also, 4-bit CPU and ALU architectures are those that are based on registers, address buses, or data buses of that size. In Computing, an arithmetic logic unit ( ALU) is a Digital circuit that performs Arithmetic and Logical operations In Computer engineering, computer architecture is the conceptual design and fundamental operational structure of a Computer system In Computer architecture, a processor register is a small amount of storage available on the CPU whose contents can be accessed more quickly than storage An address bus is a Computer bus, controlled by CPUs or DMA -capable Peripherals for specifying the Physical addresses of computer In Computer architecture, a bus is a subsystem that transfers data between computer components inside a Computer or between computers The Intel 4004, the world's first commercially available single-chip microprocessor, was a 4-bit CPU. The Intel 4004 is a 4-bit Central processing unit (CPU released by Intel Corporation in 1971 Microchipsjpg|right|thumb|200px|Microchips ( EPROM memory with a transparent window showing the integrated circuit inside A microprocessor incorporates most or all of the functions of a Central processing unit (CPU on a single Integrated (The F14 CADC was created a year before the 4004, but its existence was classified. The Central Air Data Computer is the integrated flight control system used in the early versions of the US Navy 's F-14 Tomcat fighter ) Also, the HP48 Saturn processor (a commonly used scientific calculator) is basically a 4-bit machine, though it strings multiple words together, e. The HP-48 is a series of Graphing calculators using Reverse Polish notation (RPN and the RPL programming language, produced by Hewlett-Packard g. its 20-bit memory addressing.

The 1970s saw the emergence of 4-bit software applications for mass markets like pocket calculators.

With 4 bits, it is possible to create 16 different values. All of the hexadecimal numbers can be written with 4 bits.

Binary	Octal	Decimal	Hexadecimal
0000	0	0	0
0001	1	1	1
0010	2	2	2
0011	3	3	3
0100	4	4	4
0101	5	5	5
0110	6	6	6
0111	7	7	7
1000	10	8	8
1001	11	9	9
1010	12	10	A
1011	13	11	B
1100	14	12	C
1101	15	13	D
1110	16	14	E
1111	17	15	F

List of 4-bit Processors

External references

Saturn CPU link

The octal Numeral system, or oct for short is the base -8 number system and uses the digits 0 to 7 The decimal ( base ten or occasionally denary) Numeral system has ten as its base. In Mathematics and Computer science, hexadecimal (also base -, hexa, or hex) is a Numeral system with a The Intel 4004 is a 4-bit Central processing unit (CPU released by Intel Corporation in 1971 The Intel 4040 Microprocessor was the successor to the Intel 4004. } Atmel Corporation ( is a manufacturer of Semiconductors, founded in 1984. ( is a multinational conglomerate manufacturing company headquartered in Tokyo, Japan. The Toshiba TLCS series are a family of CISC and RISC Microcontrollers from Toshiba.

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