We are offering digital ic trainer. Basic gates : not, or, and, nor, nand, ex - or, ex - nor boolean algebra law & de - morgan's theorems ttl terminologies & circuit parameters flip flops : rs, jk, d, t, m/s - jk using gates & ic's half adder, full adder, half subtractor, even - odd parity checker multiplexer, demultiplexer, binary to gray & gray to binary converters up / down, synchronous / asynchronous counters ripple / reverse, ring, binary, bcd & decade counters 4 bit universal shift register ( sr / sl operation ) seven segment display & decoder / driver