Binary clock

A binary clock displays the current time in binary using binary display elements, creating an Each decimal digit of the issued time analogous to the BCD code individually in the dual system converted and displayed, other approaches are in principle also conceivable. The display of binary numbers is often realized by light emitting diodes ( LEDs).

Build a binary clock

The first column from the left thus serves to represent the numeric value of the current number of hours and can take only three values ​​(0, 1 and 2), in the picture it is the one for 10 clock. In the second column, consequently, the values ​​One of the current time can be seen, in this case 0 for hours, this results in a value of

Accordingly, read the minutes: In the third column are the ten values ​​, shown in the fourth One of the values ​​of the respective time. Thus to obtain a value of

The presentation of the second is performed in parallel to that of the minutes.

Reading assistant

In order to recognize the displayed number in each column, the rows from below the values ​​1, 2, 4 and 8 are assigned to the top ( see picture). Now lit a light emitting diode, one adds the value of the series, in which it is to those of other luminous diodes in the same column.

Example of the minutes: In the fourth column, the diodes that are available for the values ​​1, 2 and 4 lights. Added up, these figures represent the value 7, the displayed value of one minute.

Alternative representation

For smaller watches, such as binary watches, the presentation is often in three columns that are created as follows:

So it falls off the separation between tens and units values. In these watches the hours, minutes and seconds numbers are represented in the conventional binary number system, thus less need 2 more rows and 3 columns. This system is the pure binary system related; the separation in units and tens dates back to the Binary Coded Decimal System.