Bitus

Vocabula computatralia..De  (Anglice )  : “ etiam putatur non unus sed grex computatralis hanc pecuniam electronicam creavisse; quid sit ergo  nummarius (Anglice )?”..Numen – The Latin Lexicon – Latinitas Recens, p. 16. (bīnārius dĭgĭtus, verbum amalgamatum, p. x.Sed, cave, verbum Anglicum digit haud digitum, sed notam numeri significat.), vel  vel  tantum (indecl., n.), est singula nota numeri in systemate numerico binario in computationibus electronicis adhibito.

Redactio datorum in discretos bitos primum per tesseras foratas, a  et  inventas, anno 1732 explorata est. Eadem excogitatio anno 1804 a  (per ) perficiebatur, ac postea a , Carolo Babbage, et  adhibita est. Simili machinatione, formā , primi opifices officinarum IBM usi sunt ad data servanda.

In his exemplis, foramina et eorum absentia (illic ubi foramen exspectabatur) utramque notam numeri in systemate binario repraesentabant.

Alphabetum Morsianum (1837) primaque  (1887) et bitis usa sunt ad notitias mittendas.

Anno 1928  suasit ut logarithmus basi 2 eligeretur mensio informationis.. Verbo  primum Claudius Elwood Shannon anno 1948 in suo commentario disceptatorio “” usus est.... Ipse originem vocabuli  attribuit, qui die 9 Ianuarii 1947 notam intra Bell Labs divulgandam scripserat ubi verbo bit locutionem Anglicam  ( ‘nota numeri informationis binariae’) compendii fecit.: “The choice of a logarithmic base corresponds to the choice of a unit for measuring information. If the base 2 is used the resulting units may be called binary digits, or more briefly bits, a word suggested by J. W. Tukey.”

Quum ars informatica progrederetur,  vel octetus ( octonioNomen octeti e vocabulo Hispanico  videtur oriri, sed fontibus caret. Suffixum -etus non est Latinum: mediaevali Latinitate suffixum -ettus (duplā litterā “t”) raro invenitur (conferatur vallettus), e suffixo classico -ittus ortum (ergo rectius octettus dicendum sit; vide etiam vocabulum Italicum ottetto). Puriore Latinitate grex octo rerum octonio () appellatur. bitorum) factus est numerus minimus bitorum qui in quacumque serie datorum computatralium exsistere possunt, ideo in plerisque architecturis computatralibus octoni biti sunt minima unitas memoriae allocabilis.

In  , : “in notas  (HELF.)”. Etiam videatur  apud Victionarium Anglicum et . octonio (septenio + unibitus vacuus) adhibetur ad singulum characterem repraesentandum. In historia computatrorum aliae compages quoque exploratae sunt., cap. 7, “The Shift Matrix”: “ Most important, from the point of view of editing, will be the ability to handle any characters or digits, from 1 to 6 bits long.Figure 2 shows the Shift Matrix to be used to convert a 60-bit word, coming from Memory in parallel, into characters, or ‘bytes’ as we have called them, to be sent to the Adder serially. The 60 bits are dumped into magnetic cores on six different levels. Thus, if a 1 comes out of position 9, it appears in all six cores underneath. Pulsing any diagonal line will send the six bits stored along that line to the Adder. The Adder may accept all or only some of the bits.Assume that it is desired to operate on 4 bit decimal digits, starting at the right. The 0-diagonal is pulsed first, sending out the six bits 0 to 5, of which the Adder accepts only the first four (0–3). Bits 4 and 5 are ignored. Next, the 4 diagonal is pulsed. This sends out bits 4 to 9, of which the last two are again ignored, and so on.It is just as easy to use all six bits in alphanumeric work, or to handle bytes of only one bit for logical analysis, or to offset the bytes by any number of bits. All this can be done by pulling the appropriate shift diagonals. An analogous matrix arrangement is used to change from serial to parallel operation at the output of the adder. ”, cap. 5, “Input-Output”: “ 60 is a multiple of 1, 2, 3, 4, 5, and 6. Hence bytes of length from 1 to 6 bits can be packed efficiently into a 60-bit word without having to split a byte between one word and the next. If longer bytes were needed, 60 bits would, of course, no longer be ideal. With present applications, 1, 4, and 6 bits are the really important cases.With 64-bit words, it would often be necessary to make some compromises, such as leaving 4 bits unused in a word when dealing with 6-bit bytes at the input and output. However, the LINK Computer can be equipped to edit out these gaps and to permit handling of bytes which are split between words.”

In , singulus bitus entropiam cuiuscumque fortuitae quantitatis variabilis binariae (seu quae aequali probabilitate uni aut zero tantum congruere potest) mētītur.. Eadem etiam est informatio acquisita quum valor variabilis fiat notus..IEEE Standard Letter Symbols for Units of Measurement (SI Customary Inch-Pound Units, and Certain Other Units). Standards.IEEE.org (Technical report). IEEE. 2004. 260.1-2004. In honorem Claudii Elwood Shannon mathematici Michiganiensis, bitus ut unitas informationis etiam shannon appellatur..

Biti indicantur per litteram minusculam “b”, quae non confundenda est cum littera “B” capitanea, octonionem bitorum (Anglice ) indicante.

 Greges bitorum minimi in architectura computatrorum adhibiti 
{| class="wikitable"
|-
	! Biti
	! Anglice
	! Latine
	! Maximus numerus captusMinimus numerus semper zerus est.
|-
	| 1
	| 
	| singulus bitus, unibitus
	| 1
|-
	| 2
	| 
	| dibitus, binio () –  “bitorum”, mica
	| 3
|-
	| 3
	| 
	| tribitus, ternio () – 
	| 7
|-
	| 4
	| 
	| quadribitus, quaternio ()
	| 15
|-
	| 5
	| 
	| quinio ()
	| 31
|-
	| 6
	| 
	| senio ()
	| 63
|-
	| 7
	| 
	| septenio
	| 127
|-
	| 8
	| 
	| octobitus, octonio, octet(t)us, morsus ()
	| 255
|-
	| 12
	| 
	| duodenio, syllaba
	| 4095
|-
	| 15
	| 
	| quindenio, fascis ()
	| 32765
|-
	| 16
	| 
	| duplex –  “series bitorum”
	| 65535
|-
	| 18
	| 
	| duodevicenio
	| 262143
|-
	| 32
	| 
	| quadruplex – 
	| 4294967295
|-
	| 64
	| 
	| octuplex
	| 18446744073709551615
|-
	| 128
	| 
	| sedecuplex, paragraphus
	| 
|-
	| 2048
	| 
	| pagina
	| ∼ 3.2317… × 10616
|}

 Redactio in notas ASCII 

In redactione in notas ASCII, octonio bitorum (septenio + unibitus vacuus) adhibetur ad singulum characterem repraesentandum. Characteres a zerensimo ad tricensimum secundum, unā cum charactere centensimo vicensimo septimo, sunt metacharacteres –  invisibiles notae quae peculiares iussūs praescribunt ( de tono emittendo, de versu finiendo, de spatio creando, et cetera).

 Notae 

 Bibliographia 



 Bush, Vannevar (1936). “Instrumental analysis”. . 42 (10): 649–669





 Shannon (unitas)
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