Segment Displays Wiki
Solar Powered Π.jpg

Calculators are one of the most prominent and continued use of 7-segment displays since they only need a line of usually at least eight decimal digits, each amended with an eighth segment for the decimal point, which is commonly labeled ₯. Hexadecimal digits may also be supported easily.

Hexadecimal digits
0 1 2 3 4 5 6 7 8 9 A B C D E F
abcdef bc abdeg abcdg}}} bcfg}}} acdfg acdefg abcf abcdefg abcdfg abcefg cdefg adef bcdeg adefg aefg

More advanced, scientific calculators may sport several lines and other math symbols. Most therefore use a dot matrix display instead.