Based on proteus and C51 thermostat simulation, including the source code.

Sim\Last Loaded temp_control.DBK
...\temp_control.DSN
...\temp_control.hex
...\temp_control.PWI
temp_control.PNG
FW\STARTUP.A51
..\STARTUP.LST
..\STARTUP.OBJ
..\system_alarm
..\system_alarm.c
..\system_alarm.hex
..\system_alarm.lnp
..\system_alarm.LST
..\system_alarm.M51
..\system_alarm.OBJ
..\system_alarm.plg
..\system_alarm.uvgui.Gavin
..\system_alarm.uvgui_Gavin.bak
..\system_alarm.uvopt
..\system_alarm.uvproj
..\temp_control.c
Sim
FW

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