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the characters that you find on your keyboard are mostly taken from the old 1960s 7-bit ascii character set and that is a very small character set it has only 94 graphic characters which iamp;#39;ve shown here and these characters were taken were chosen by the standards committee to cover essentially the repertoire that you could find on the keyboards of american typewriters or teletype printers and then when they filled the code table they had a small number of positions left and they added a couple of symbols that the committee thought would be useful for programming languages mostly brackets and braces underscores for use in variable names and quite peculiar the backslash that hadnamp;#39;t existed before someone thought that you could combine the slash and the backslash into a v-shaped or inverted v-shaped symbol for logical and and logical not but because itamp;#39;s such an unusual and exotic character thatamp;#39;s not used anywhere else it became very popular as a meta char
