4-bit computing: Difference between revisions

Revision as of 15:29, 3 April 2023

Revision as of 15:31, 3 April 2023

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The processor in Barbie typewriters that can encrypt is a 4-bit microcontroller.<ref>[https://www.cryptomuseum.com/crypto/mehano/barbie/ Paul Reuvers and Marc Simons. Crypto Museum. "Barbie Typewriter", 2015]</ref>

== Details ==

{{Main|Nibble}}

With 4 bits, it is possible to create 16 different values. All single-digit [[hexadecimal]] numbers can be written with four bits. [[Binary-coded decimal]] is a digital encoding method for numbers using decimal notation, with each decimal digit represented by four bits.

With 4 bits, it is possible to create 16 different values. All single-digit [[hexadecimal]] numbers can be written with four bits.

{| class="wikitable"

|-

With 4 bits, it is possible to create 16 different values. All single-digit [[hexadecimal]] numbers can be written with four bits. [[Binary-coded decimal]] is a digital encoding method for numbers using decimal notation, with each decimal digit represented by four bits.

! [[Binary numeral system|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==