Signal vs Null - What's the difference?
signal | null |
A sign made to give notice of some occurrence, command, or danger, or to indicate the start of a concerted action.
* Milton
An on-off light, semaphore, or other device used to give an indication to another person.
(of a radio, TV, telephone, internet, etc) An electrical or electromagnetic action, normally a voltage that is a function of time that conveys the information of the radio or TV program or of communication with another party.
A token; an indication; a foreshadowing; a sign.
* Shakespeare
* De Foe
Useful information, as opposed to noise.
(computing, Unix) A simple interprocess communication used to notify a process or thread of an occurrence.
To indicate.
Standing above others in rank, importance, or achievement.
* Milton
A non-existent or empty value or set of values.
Zero]] quantity of [[expression, expressions; nothing.
Something that has no force or meaning.
(computing) the ASCII or Unicode character (), represented by a zero value, that indicates no character and is sometimes used as a string terminator.
(computing) the attribute of an entity that has no valid value.
One of the beads in nulled work.
(statistics) null hypothesis
Having no validity, "null and void"
insignificant
* 1924 , Marcel Proust, Within a Budding Grove :
absent or non-existent
(mathematics) of the null set
(mathematics) of or comprising a value of precisely zero
(genetics, of a mutation) causing a complete loss of gene function, amorphic.
As nouns the difference between signal and null
is that signal is signal while null is zero, nil; the cardinal number before einn.signal
English
(wikipedia signal)Alternative forms
* signallNoun
(en noun)- All obeyed / The wonted signal and superior voice / Of this great potentate.
- My mobile phone can't get a signal in the railway station.
- The weary sun / Gives signal of a goodly day to-morrow.
- There was not the least signal of the calamity to be seen.
Antonyms
* (useful information) noiseDerived terms
* signal box * signalman * signalwoman * smoke signalSee also
* tocsinVerb
Adjective
(-)- a signal''' exploit; a '''signal''' service; a '''signal act of benevolence
- As signal now in low, dejected state / As erst in highest, behold him where he lies.
Anagrams
* 1000 English basic words ----null
English
Noun
(en noun)- (Francis Bacon)
- Since no date of birth was entered for the patient, his age is null .
Adjective
(en adjective)- In proportion as we descend the social scale our snobbishness fastens on to mere nothings which are perhaps no more null than the distinctions observed by the aristocracy, but, being more obscure, more peculiar to the individual, take us more by surprise.
