The IC 7440 is a quad 2-input NAND gate with open-collector outputs, part of the 7400 series TTL logic family. It contains four independent NAND gates, each with two inputs, and features open-collector outputs that can be used for wired-AND configurations. This IC is useful in digital logic applications for creating complex logic functions and for interfacing with other digital components.

The IC 74161 is a synchronous 4-bit binary counter, part of the 7400 series TTL logic family. It features synchronous counting, which means all flip-flops in the counter are clocked simultaneously. The IC includes features for counting up or down, and can be preset with specific values. It’s used in digital applications for precise counting, timing, and arithmetic operations in various electronic systems.

The IC 7407 is a hex buffer/driver with open-collector outputs, part of the 7400 series TTL logic family. It includes six independent buffer/drivers, each with an open-collector output that can sink current but not source it. This IC is used for interfacing with external devices, driving loads, and implementing wired-AND configurations in digital circuits.

The IC 4060 is a 14-stage binary ripple counter with an internal oscillator, part of the 4000 series CMOS logic family. It includes a 14-bit binary counter, a frequency divider, and a crystal-controlled oscillator. This IC is used for timing applications, frequency division, and as a frequency generator in various digital and analog electronic circuits.