====== Lab Work 3 (Part 3) ======

====== Flip-flop ICs ======

We are going to look at samples of flip-flop IC:
  * D Flip-flop ({{:archive:pgt104:sn74ls74a.pdf|DFF 7474}}: Dual D-FF positive-edge triggered, asynchronous preset & clear)
  * J-K Flip-flop ({{:archive:pgt104:sn74ls76.pdf|JKFF 7476}}: Dual JK-FF asynchronous preset & clear)
  * J-K Flip-flop ({{:archive:pgt104:sn74ls112a.pdf|JKFF 74112}}: Dual JK-FF negative-edge triggered, asynchronous preset & clear)

====== Things To Do ======

**THING1** Implement a 2-bit counter (asynchronous, continuously counts up).

**THING2** (Optional) Implement **THING1** with start/stop/reset button(s).

**THING3** Implement a 4-bit counter (asynchronous, continuously counts up).

**THING4** (Optional) Implement a 4-bit counter (asynchronous, continuously counts down).

**THING5** Implement a 4-bit running light (**Hint**: Ring Counter - you need a reset switch for this).