Computers have only been with us for a few decades but
their impact (direct or indirect) on our lives is profound.
Usually these are supposed to be just
performing exhaustive numeric operations
. But there
presence is unnoticed at most of the places; like
in Cash Registers, Weighing Scales, etc.
in Ovens, Washing Machines, Alarm Clocks, etc.
in Toys, VCRs, Stereo Equipment, etc.
in Typewriters, Photocopiers, Elevators, etc.
in Industrial Automation, safety systems, etc.
in Cars, Traffic Signals, etc.