TASK 4.04 An oven has a number of components that should all be working properly. For each
component there is a signalling mechanism that informs a management system
either if all is well, or if there is a problem. Table 4.05 summarises the signal values
that record the status for each component.
Signal
Value
A
1
0
Component condition
Fan not working
Fan working properly
Internal light not working
Internal light working properly
Thermometer reading too high
Thermometer reading in range
B.
1
1
Table 4.05 Signals from the oven components
If the thermometer reading is in range but either or both the fan and light are not
working, the management system has to output a signal to activate a warning light
on the control panel. Draw a logic circuit for this fault condition.