Adigital computer has a memory unit with 20 bits per word. the instruction set consists of 100 different operations. all instructions have an operation code part (opcode), and an address part (allowing for only one address). each instruction is stored in one word of memory a) how many bits are needed for the opcode? b) how many bits are left for the address part of the instruction? c) what is the maximum allowable size (in words) for memory?

Choose the best explanation for the following statement communication is symbolic

Kirk found a local community college with a two-year program and he is comparing the cost with that of an out-of-state two-year school. what is the expected total cost for one year at the local community college if kirk lives at home? what is the expected total cost for one year at the out-of-state school if kirk lives on campus?

Which of the following statements is false? a. a class can directly inherit from class object. b. if the class you're inheriting from declares instance variables as private, the inherited class can access those instance variables directly. c. a class's instance variables are normally declared private to enforce good software engineering. d. it's often much more efficient to create a class by inheriting from a similar class than to create the class by writing every line of code the new class requires.