🔍 Key Concepts

• Meaning of decade in digital electronics (relationship to the number 10) • Basic behavior of a counter versus a decoder • Difference between frequency division (counting pulses) and arithmetic operations (adding numbers)

💭 Think About

• What does the word counter tell you about how the IC interacts with input pulses over time? • How does a device that "counts to 10" typically relate the number of input pulses to the number of output pulses? • Which options are actually describing display/decoding or arithmetic, rather than counting?

✅ Before You Answer

• Make sure the chosen option clearly involves counting input pulses and changing state every pulse. • Eliminate any choice that mainly describes converting numbers to display form (decoder) or adding numbers (adder). • Check whether the option you pick reflects the idea of ten counts per cycle (a full sequence before repeating).