Tool for translating abcdefg codes (or binary or numeric codes) into 7-segment display (the name given to digital screens dedicated to numbers on alarm clocks, watches, etc.)
7-Segment Display - dCode
Tag(s) : Electronics, Symbol Substitution, Character Encoding
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Basically, the display consists of seven segments identified by a letter (from a to g), organized as follows: and each segment is generally associated with an LCD screen or a LED and can thus be activated / on 1 or off 0. There are a total of 128 possible combinations of display, although it is most often the combinations for the 10 digits (from 0 to 9) that are used.
It is also possible to identify them with a binary string 1 = active, 0 = inactive, starting from the end gfedcba. In this way a is 0000001 and g is 1000000
The 7-segments displays may be common cathode (CC) or common anode (CA), in this second case the 0 and 1 are switched.
In a common cathode display, these are connected to the low potential, a segment is displayed by activating it in its logical 1 position.
In a common anode display, these are connected to the high potential, so a segment is displayed by activating it in its logical 0 position.
The code consists of the letters a,b,c,d,e,f,g only, in groups of 1 to 7 letters without repetition.
For the binary variant, the codes are normally on 7 bits from 0000000 to 1111111.
The presence of a calculator, a clock or a digital watch or the characters 7SEG are clues.
There exists also 9 segment displays (with an additional 2 segment diagonal), 14 segments (with 2 diagonals and a central vertical bar) or 16 segments (identical to the 14 segments but with the top and bottom segments cut in half).
The Beghilos code uses the 7 segments with a reverse reading (backwards).
The first patents date from the beginning of the 20th century (1903, 1908, 1910) but the advent of the displays came in the 1970s.