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BUY DM74123N https://www.utsource.net/itm/p/639278.html
DUAL RETRIGGERABLE ONE-SHOP WITH CLEAR AND COMPLEMENTARY OUTPUTS
The DM74123N is a 16-pin DIP (Dual In-line Package) integrated circuit (IC) from National Semiconductor. It is a 4-bit magnitude comparator, which is used to compare two 4-bit binary or BCD numbers and determine which is greater. It has four outputs: A > B, A = B, A < B, and A ≠ B. The outputs are active-low logic levels, meaning that the output is low when the comparison is true. Features: * 4-bit magnitude comparator * Compares two 4-bit binary or BCD numbers * Four active-low outputs: A > B, A = B, A < B, and A ≠ B Applications: * Digital logic circuits * Arithmetic logic circuits * Digital systems * Computer systems (For reference only)