MOD 21 and MOD 26 circuit using CD4026

In this video, I've explained how to make 00 to 20 and 00 to 25 counter circuit using CD4026. 00 to 20 means MOD 21 counter and 00 to 25 means MOD 26 counter.
CD4011 NAND Gate IC:
https://youtu.be/Y--w6l0HJ5U

CD4082 AND 4 Input AND Gate IC:
https://youtu.be/azbgr6sFeLw

Pull up and pull down resistor:
https://youtu.be/7J_4eA5RUzk

Basic things of IC 4026:
https://youtu.be/HuVM-GvXMK8

cascade the decade counter IC 4026:
https://youtu.be/kfYKslapP8s
Other MODs:

MOD 4: https://youtu.be/Hd2EV6wtprw
MOD 6: https://youtu.be/2JG1H2N88n4
MOD 8: https://youtu.be/vn_vDT_kAHM
MOD 10: https://youtu.be/WEQeqLyWN3s
MOD 12: https://youtu.be/tYWnElrvJHs
MOD 15: https://youtu.be/HAZ0YkajgaU
MOD 24: https://youtu.be/3RZRcv1Pc7k
MOD 32: https://youtu.be/EmqK909kVFk
MOD 60: https://youtu.be/iy42ZPP8Jzw
Required Components:

IC : CD4026, CD4011, CD4082
Resistors : 220 Ω, 10 K
Capacitors : 0.1 μF
Miscellaneous : common cathode 7 seg display
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Видео MOD 21 and MOD 26 circuit using CD4026 канала EE Wave