Interrupt by the very name suggests that a normal sequence of execution is temporarily suspended and another task to be performed. For example, Power fail routine must be given highest priority to save the data and control parameters, before the CPU is switched OFF or when the power fails. When the power supply is restored, the CPU must know where to continue and perform its task with out break. So this can be called as an occurrence of an interruption in the normal sequence of execution. But depending on the priority, the order or Priority can be assigned in the firmware setup.
This trainer provides necessary facilities to experiment the above for better understanding. We use INTEL make 8259 PIC device. In order to support generation of priority of interrupt 8- numbers of switches connected. Using these switches, the programmer can write his application programs and test his software.
This unit is connected to the System bus of the Microprocessor Trainer Model MPT-85. This unit has built-in power supply.
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