Interrupts are what
your 4 year old generates every time you try to have any kind of conversation
with someone (just couldn't resist).
It's also a computer
term (surprise). Normally called Interrupt Requests, they are basically
calls made from a hardware device to get the "attention" of
the CPU (similar to the way a 4 year old gets an adult's attention).
For example, if a disk drive needs to get the attention of the CPU to
preform a task, it sends an "interrupt" that allows it to
have access to the system.
Most computers have
16 interrupts, most of which get taken up right away.
This causes problems when you want to try to install a new piece of
hardware that requires an interrupt that is already being used.
can be "shared", but the best solution is probably to use
USB devices. Your USB port allows you to use tons of hardware devices
with no concern about running out of interrupts. All the devices on
a USB port share the port's Interrupt Request number (see, your kindergarten
teacher was right about sharing).
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