The indispensable Digital
Moving Coil Voltmeters, Ammeters and
Resistance Bridge were combined to
Meters a field instrument. They were
used alongside hand cranked meggers,
current-potential transformers. Valve
based Electronic Instrumentation with
Nixie Tube Displays cannot be
forgotten, taking readings from nixie
tube displays can be more satisfying
than reading a plain LCD. The Vacuum
Florescent 7 segment display array was
popular till very recent times in some
cash registers, calculators.
Talking of cash registers read this
(Nippon Calculating Machine Corp
changed its name to Business Computer
Corporation) was a Japanese company
that owned the rights to the first
microprocessor but sold them back to
is the first computer processor
designed and manufactured by chip
maker Intel, which previously made
semiconductor memory chips. The chief
designers of the chip were Federico
Faggin... and Ted Hoff ... and
Masatoshi Shima of Busicom.."
Then came Semiconductor Transistor
Multimeters with a Moving coil
display, after that arrived LED
Display based Benchtop Semi-Portable
DMM, which were "IC" Technology.
These consumed more power and big in
size. Now you have CMOS, LSI and ASIC
based DMM which are light, small and
batteries last longer too.
PC based Virtual DMM, Voltage modules
for PLC or ATE and Wireless or optic
Voltage Transmitters are new and
advanced form of Electrical Parameter
Measurement and Recording.
It would be splendid if some firm
developed a kit or App for measurement
in portable computers.
Source Files for above DMM Project 20008.zip,