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Using numbers from 1 to 12, followed by am or pm, the hour clock system identifies all 24 hours of the day. Ante meridiem is commonly denoted as AM, am, a. Like many other sources, timeanddate. The main weakness of the hour system is a widespread confusion about which abbreviation should be used for noon and midnight: neither moment can logically be identified as before noon am or after noon pm.
For example, the moment of midnight occurs precisely 12 hours after noon on the previous day and 12 hours before noon on the following day. However, most digital clocks and most sources, including timeanddate. Although the precise moment of noon falls in neither category, the hour succeeding it, from to , is clearly after noon.
A representation of the pronunciation of ham by a speaker whose dialect lacks the voiceless glottal fricative or transition IPA : [h]. A signal modulation technique in which the amplitude of the analog carrier sine wave is modulated to represent one or more 1 bits or 0 bits.
The transmitting computer outputs a baseband electrical signal, defining 1 bits and 0 bits as discrete voltage levels. Using a unibit single-bit AM technique as illustrated in Figure A-4, each 1 bit entering the transmitting modem is expressed as one or more relatively high-amplitude sine waves, and each 0 bit is expressed as one or more low-amplitude sine waves. The high and low levels are defined in terms of a reference level or by the relative difference between the levels.
At baud, this unibit technique yields a transmission rate of bps, with one bit transmitted per baud, that is to say that the bit rate equals the baud rate. In a dibit coding scheme, it is possible to express 2 bits with a single baud by defining 4 levels of amplitude, so the bit rate is double the baud rate. A tribit coding scheme expresses 3 bits per baud by defining 8 levels of amplitude, and a quadrabit coding scheme expresses 4 bits by defining 16 levels of amplitude.
Amplitude modulation often is used in conjunction with frequency modulation FM and phase-shift keying PSK in electrically based networks. Probably an analogical construction based on the old first-person plural or perhaps influenced by similar forms in other languages . Compare Aromanian am u ; cf. The form with -v- avem in the present form of the verb's main conjugation as opposed to its use in this form as an auxiliary verb may have been remade by analogy with avut  ; am may also be seen as a reduced, clitic form of avem .
Definition from Wiktionary, the free dictionary. See also: Appendix:Variations of "am". English Wikipedia has an article on: AM. Chuukese personal pronouns.Footnote on "Meridiem" vs "Meridian" Should "AM" be "ante meridiem" or "ante meridian" (likewise for PM)?. The official (according to an American, Australian and British dictionary I checked), and most common spelling for AM is "ante meridiem" which is a Latin phrase.I recommend that spelling!