| S.No | IC Number | Description | Pinout Details |
| 31 | 4051 | Single 8 channel multiplexer |  |
| 32 | 4052 | Differential 4 Channel multiplexer |  |
| 33 | 4053 | Triple,2 input analogue multiplexer |  |
| 34 | 4060 | 14-stage counter and oscillator |  |
| 35 | 4066 | Quad Bilateral switch |  |
| 36 | 4068 | 8 input NAND gate |  |
| 37 | 4069 | Hex invertor |  |
| 38 | 4070 | Quad Ex-OR gate |  |
| 39 | 4071 | Quad 2 - input OR gate |  |
| 40 | 4072 | Dual 4 - input OR gate |  |
| 41 | 4073 | Triple 3 input AND gate |  |
| 42 | 4075 | Triple 3 input OR gate |  |
| 43 | 4076 | Quad, 3 state 'D' register |  |
| 44 | 4077 | Quad Ex-NOR gate |  |
| 45 | 4078 | 8 input NOR gate |  |