The purpose of the RTC or possibly a authentic time clock is always to offer exact time and date which can be used for various purposes. RTC is surely an electronic product during the type of an Integrated Chip (IC) available in numerous packaging alternatives. It can be powered by an interior lithium battery. To be a outcome of which whether or not the power in the technique is turned off, the RTC clock retains running.
It plays a very important function in the actual time units like digital clock, attendance system, electronic digital camera and so forth. In applications in which time stamp is needed, RTC is really a good option. Working with RTC for building these kinds of application has generally been a superb designer?¡¥s choice even though the beginning may well be a little bit tricky.
Although designing any real time program which bargains with time, there are 2 means of dealing with time component. One is to generate time internally that's completed by programming the timers from the controller; and also the other would be to use an RTC. The following desk reveals the comparison of those solutions while building a true time software.
Related links：
What's RTC (actual time clock), and why is this checked to execute a system?
Introduction ¡§C Real-time Clock (RTC) ICs
Authentic Time Clocks (RTCs) in Microcontroller Timers
