An external clock is usually located on another system and can be accessed with software. You can get software to sync your internal clock to that other system. The National Institute for Science and Technology (NIST) hosts a clock that many computer users and businesses sync to.
Wow...can that answer be any more wrong?
Internal and External clocks are NOT referring to the "time of day" type clocks, they refer to the internal processor clock cycle or an external clock source. The clock cycle of a processor is the time it takes for the processor to execute a data instruction (very basic explanation there) and is measured as the speed of a processor, like a 2.6gHz processor can execute 2.6 billion clock cycles per second.
Now this is somewhat misleading as the processor speed itself is probably only 400MHz, but using an External Multiplier (clock multiplier, external clock), you increase the total amount of data the processor can execute in one clock cycle.
This is a VERY basic example and I don't have time to really go deep, so it's best to search for a more concise answer if you really require one.
internal input is the one where we give inputs as well and external input is the clock input
days
The difference between 12 hour clock and a 24 hour clock is that when you say 1:00am for a 12 hour clock you would say 0100 hours
Internal or biological clock
register has the same clock. counter do not need to have the same clock.
"The Borrowers" features both internal and external conflicts. The internal conflict arises when Arrietty struggles with her desire to explore the outside world versus her fear of the dangers it poses. The external conflict occurs when the Clock family faces threats from the humans in whose house they live.
Bus Clock is based on the System Clock. In other terms Bus Clock is derived from system Clock. Bus Clock is usually half System Clock. (Busy Clock = System Clock / 2)
In science experiment paralleling this question thee subjects slept a lot during the initial stages but eventually adopted a circadian cycle of awake and asleep. It might not match the outside worlds status but what difference does it make. There is no rule that people have to set their internal clocks by your locations external clock.
Internal or biological clock
the difference is that the wing is attached to the bussom of a bird and an airfoil is attached to the clock of the plane.
it's a clock that's in the system
timer uses internal clock frequency, and generates delay counter uses external signal to count pulses... Timer *the register incremented for every machine cycle. *maximum count rate is 1/12 of oscillator frequency. Counter *The register is incremented in response to a 1- to -0 transition at its corresponding to external input pin(T0,T1). *maximum count rate is 1/24 of oscillator frequency. *External I/P signal must be kept at least for one machine cycle