MC1026

Unix Time Modulus
About
ID	MC1026
Self Triggered	No
Clickable	No
Input	Yes
Output	Yes
Sign Format
First line	UNIX TIME
Second line	[MC1026]
Third line	x (optional; default 2)
Fourth line	y (optional; default 0)
Craftbook Page

Details

• Second Line
  • [MC1026]
• Third Line
  • x (optional; default 2) = The divisor
• Fourth Line
  • y (optional; default 0) = The number to compare the remainder to

When activated, outputs high if the current Unix time (in seconds) mod x is greater than y. Otherwise, outputs low.

In other words: outputs high if ([Unix time] % x) > y. Or: output will be high for x - y - 1 out of every x seconds.

Unix time in this case is the current timestamp provided by the system, in seconds.

Generally speaking, the smaller the value of x is the faster the IC will activate. Additionally, if y is closer to 0 the IC will likely output high for a longer period of time, where as if it is closer to x it will only be on for short pulses.

Default behaviour is to output high if the current Unix time is odd. More specifically, x is set to 2 and y is set to 0 by default.

Examples

The following table shows the output of MC1026 for x = 5 and y = 3:

Seconds	Remainder	Output
1	1	LOW
2	2	LOW
3	3	LOW
4	4	HIGH
5	0	LOW
6	1	LOW
7	2	LOW
8	3	LOW
9	4	HIGH
10	0	LOW

Notable and Practical Uses

This IC can be used to make asymmetrical and long-period clocks. This can be useful for:

• Clocks that have periods of hours or days
• Lights that blink instead of staying on and off for the same amount of time
• Calendars
• Combining the functions of MCU440 and MC0420

Due to the Unix time value being independent from the game itself, this IC provides accurate real-world timing regardless of lag, skipping the night, or changes to the in-game time.

As such, this IC is well suited for long-period clocks, real-time scheduling systems, and other mechanisms requiring consistent real-world timing.

See Also

• MC1025