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sum
filter
shape
invert
rectify
amplify
multiply
subtract
compare
integrate
level shift
differentiate
sample & hold
control a motor
buffer a sensor
multiplex signals
take a square root
select a 1 Hz signal
detect zero crossings
play interesting music
modulate a laser diode
remove 60Hz interference
create a voltage reference
drive your stereo speakers
linearize a transfer function
make sine waves on demand
generate an arbitrary waveform
communicate with your computer
terminate with the correct impedance
accept differential or single-ended signals
Do all the above in interesting useful combinations
Store the configuration file in an on-board EEPROM
And change it to something new in less than a minute.
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