General

• Pull-Down Switch

Arithmetic
The word arithmetic is pronounced differently depending on whether it is used as a NOUN or an ADJECTIVE.
As a NOUN (meaning the branch of math dealing with numbers), the stress is placed on the second syllable (a-RITH-me-tic).
When used as an ADJECTIVE (such as in "arithmetic mean"), the stress shifts to the third syllable (a-rith-ME-tic).

• Half Adder
• Full Adder
• 2-Bit Adder
• Adder-Subtracter for Signed (2's Complement) Nibbles

Flip-Flops and Latches (Basic 1-Bit Memory Circuits)

• SR Flip-Flops (Active High and Active Low)
• (Gated) SR Flip-Flops
• (Unclocked) D Flip Flop (Eliminating the Invalid State)
• (Clocked) Level-Triggered D Latch
• Edge-Triggered D Latch
• Edge-Triggered JK Flip-Flop

Registers and Counters

• Buffer Register
• Shift Register
• Latched Shift Register
• Ripple Counter
• Synchronous Up Counter
• Ring Counter

Memories

• Diode ROM

Dividers

• 4060 Frequency Divider (ACES Christmas Tree / Minute Minder)
• Divide-by-2 (D Flip-flop)

Decoders

• ACES 4511S Signed 4-bit to 7-Segment

Miscellaneous

• 1-Bit Magnitude Comparator
• Rock-Paper-Scissors
• Rock-Paper-Scissors (Optimized)
• Joule Thief
• Analog Oscillator
• Multiplexer/Demultiplexer
• 6-Position R/2R Ladder DAC

References:

• Electronics Hub