AL Binary Clock Screensaver 3 description
The time is display in binary numbers horizontally across the screen.

AL Binary Clock Screensaver will display, on your desktop, the time in binary numbers horizontally across the screen. The top row is the number of hours, the middle row is the number of minutes and the last row is the number of seconds.

The binary system is used in every single digital computer. Instead of counting with 10 digits, computer count with only 2 digits. Computers make milions of calculations per second using the binary system.