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Bit
1 4 8 12 16 18 24 26 31 32 36 48 60 64 128 256 512
Application
16 32 64
Floating point precision
×½ ×1 ×2 ×4
Floating point decimal precision
32 64 128

In computer architecture, 18-bit integers, memory addresses, or other data units are those that are at most 18 bits (2.25 octets) wide. Also, 18-bit CPU and ALU architectures are those that are based on registers, address buses, or data buses of that size.

18 binary digits have 262144 (1000000 octal, 40000 hexadecimal) distinct combinations.

18 bits was a common word size for smaller computers in the 1960s, when large computers often used 36 bit words and 6-bit character sets were the norm.

Example 18-bit computer architectures[edit]

References[edit]


Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/18-bit — Please support Wikipedia.
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26 news items

 
GameDev.net
Sun, 12 Oct 2014 09:18:07 -0700

Most were/are based on 36-bit words, but they had methods to address in 18-bit, 9-bit, and 6-bit ways. Most of the old PDP machines, DEC supercomputers, and Univac machines were this size. This type of machine was used by tons of businesses, schools, ...
 
elektroniknet.de
Mon, 29 Sep 2014 02:00:00 -0700

Mit dem MAXREFDES74# hat Maxim ein Referenzdesign für ein 18-Bit-Datenerfassungssystem im Angebot. Es ist dafür ausgelegt, FPGA-basierte Regelungssysteme zu evaluieren und zu validieren. Das Referenzdesign ist eine komplett ausgearbeitete ...
 
LEDs Magazine
Mon, 06 Oct 2014 14:03:58 -0700

It boosts the already smooth colour range, fading and dimming of the DLS profile, and the DL4S also features an innovative LED driver system, producing an improved and extremely high definition dimming curve for all R, G, B and W colours … with 18 bit ...

Live Design

Live Design
Tue, 30 Sep 2014 08:11:15 -0700

It boosts the already smooth colour range, fading and dimming of the DLS profile, and the DL4S also features an innovative LED driver system, producing an improved and extremely high definition dimming curve for all R, G, B and W colours … with 18 bit ...

ElectronicsWeekly.com

Electropages (press release)
Wed, 24 Sep 2014 05:27:53 -0700

Additional add-on boards include the WIFI Dongle which connects via USB and an LCD8000 display and interface board which offers an 18-bit touchscreen at 480×272 resolution. The μC/Probe from Micrium is also available for use with the SAMA5D3.
 
SYS-CON Media (press release)
Tue, 09 Sep 2014 08:33:45 -0700

LAKE KIOWA, Texas, Sept. 9, 2014 /PRNewswire/ -- Nevis Capital Corporation (OTC: OCEE) announces updates on Ciggies Electronic Cigarette Company (www.ciggies.biz ). Since Nevis announced its association with Ciggies, Ciggies has been ...

DigitalJournal.com

DigitalJournal.com
Sun, 12 Oct 2014 06:41:15 -0700

Today's TFT LCD such as 3.5 inch TFT LCD has generally achieved more than 18 bit color which is also 218 colors. Some are even achieve 24 bit color. On the resolution, it already got the realization of VGA and SVGA. It is indeed that the resolution and ...

Il Secolo XIX

Il Secolo XIX
Mon, 06 Oct 2014 03:18:45 -0700

Roma - «È vietata la vendita ai minori di anni diciotto di sigarette elettroniche con presenza di nicotina». Così recita l'ordinanza firmata dal Ministro della Salute, Beatrice Lorenzin e pubblicata sulla Gazzetta ufficiale del 4 ottobre. Il ...
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