Description: A simple calculator, to do with the 51 single-chip, used in the matrix keyboard, four LEDs. In keil compiler generated HEX file, attached to the simulation in proteus file.
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File list (Check if you may need any files):
calculator\calculator.Uv2
..........\calculator_Opt.Bak
..........\calculator_Uv2.Bak
..........\calculator
..........\calculator.c
..........\calculator.hex
..........\calculator.lnp
..........\calculator.LST
..........\calculator.M51
..........\calculator.OBJ
..........\calculator.Opt
..........\calculator.plg
..........\Last Loaded calculator_1.DBK
..........\calculator.DSN
..........\calculator_1.PWI
calculator