ECOR 1044 Mechatronics Questions And Answers Graded A+

What is the common theme among all analog signals? - Answer-There are infinite possibilities. What is the common theme among all digital signals? - Answer-There are discrete and finite possibilities. 1s and 0s are called...? - Answer-Bits. A group of 4 bits is a...? - Answer-Nibble. A group of 8 bits is a...? - Answer-Byte. A "word" is another group of bits whose length is processor dependent. It can be...? - Answer-16 bits, 32 bits, 64 bits, etc. How many states can be represented in an n-bit word? - Answer-Up to 2^n states (0 to 2^n - 1 since "0" is the first state, not "1"). How many states can a 4-bit word represent? - Answer-2^4 = 16 states ranging from state 0 to 15. In a digital signal, 1s and 0s are a range of voltages. True or false? - Answer-True. A 1 is Von and a 0 is Voff. For analog, 0.1% is very good accuracy. True or false? - Answer-True. What is the max storage time of an analog circuit? - Answer-30 minutes. Are analog, or digital circuits faster? - Answer-Analog circuits are faster.An OR gate in Boolean algebra is represented by a multiplication symbol. True or False? - Answer-False. The plus sign represents an OR gate. In an AND gate, X is equal to 1 when...? - Answer-Both a and b are 1. In an XOR gate, X is equal to 1 when...? - Answer-Exactly one of a or b is 1. In a NAND gate, X is equal to 1 when...? - Answer-Both a and b are 0. In a NOR gate, X is equal to 1 when...? - Answer-a or b or both are 0. To get the dual of an expression, you have to... - Answer-Put brackets around all AND terms, then swap ANDs and ORs and swap 1s and 0s. In an XNOR gate, X is equal to 1 when...? - Answer-Exactly one of a or b is 0. How many rows are in a truth table with 4 input variables? - Answer-16 rows. 4 input variables means a 4-bit number. A 4 bit number has 2^4 states. Each state is a row. Inverting any of the leads (a, b, or X) of an XOR gate changes it into an NAND gate. True or false? - Answer-False. Inverting any of the leads (a, b, or X) of an XOR gate changes it into an XNOR gate. What are 3 applications of XOR gates? - Answer-Controlled inverter, equality check, and odd parity. Inverting the inputs of a gate is equivalent to inverting the output of a gate. True or false? - Answer-False. An expression is equal to its dual. True or false? - Answer-False. What are the 3 steps for converting analog to digital? - Answer-Sampling, quantizing, and encoding.What is sampling? - Answer-Conversion of a continuous signal to a discrete-time signal. What is quantizing? - Answer-Conversion of a discrete-time signal to discrete amplitude signal. What is encoding? - Answer-Conversion of a discrete signal to binary word.