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Calendar System Using AT89C51

By using AT89c51, we can to build a calendar system,  This process is shown in figure 1 below.

Figure 1. Flowchart diagram for building a calendar system.

This can be realized by utilizing its timer. This timer give an interruption when the timer register overflows, this interruption give us an "impulse" that can be measured as a time unit (seconds, minutes, hours, days, months and year). Every time unit is stored at unique register.

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