#[Intel 8080 machine code][1], [MITS Altair 8800][2], 10 bytes 00 00 00 00 00 00 00 00 76 Listing: 0000 00 NOP 0001 00 NOP 0002 00 NOP 0003 00 NOP 0004 00 NOP 0005 00 NOP 0006 00 NOP 0007 00 NOP 0008 00 NOP 0009 00 NOP 000A 76 HLT Uses the CPU's program counter (PC, aka instruction pointer) to count from 0 to 10 then halt. The output display is conveniently in nibble format already. **Output:** Output is displayed on [Blinkenlights][3] A3-A0. [![enter image description here][4]][4] [Try it online!][5] [1]: https://en.wikipedia.org/wiki/Intel_8080 [2]: https://en.wikipedia.org/wiki/Altair_8800 [3]: https://commons.wikimedia.org/wiki/File:Blinkenlights-original.png#/media/File:Blinkenlights-original.png [4]: https://i.sstatic.net/wM78o.gif [5]: https://s2js.com/altair/sim.html