74LS197

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74LS197 50MHz Presettable Binary / Bi-Quinary Counter. This is a high-speed counting chip that counts electrical pulses up to a frequency of 50MHz. It can be wired to count standar d 4-bit binary (0 to 15) or decimal-based bi-quinary (0 to 9), and you can pre-load it to start counting from any specific number. [1] Show more