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Autoranging circuit simplifies hardware & software - 07/22/99 EDN-Design
Ideas: A natural approach to autoranging is to use an inverting op amp and switch
in one of N feedback resistors at a time for a gain of A=-RF/RO (Figure
1)….....(design idea added 11/05)
Binary Coded Decimal Bcd Clock - The clock circuit above uses seven ICs and 19
LEDs to indicate binary coded decimal time. The LEDs can be arranged (as shown in
example above) so that each horizontal group of 3 or 4 LEDs represents a decimal
digit between 0 and 9 and each individual LED represents a single bit or (binary
digit) of the value. Binary digits....(electronic schematic / circuit added
04/03/02)
C routine detects single high bits - 07/04/96 EDN-Design Ideas: Sometimes, you
need to be able to verify existence of just one high bit in a word. This
ability can be useful, for example, to verify wher just one bit in a mask of
mutually exclusive flags is set or if an incongruence exists in a word
representing a set of input contacts. The most obvious way to implement this
verification is to use a loop.....(design idea added 11/05)
