A signature line in a workbook makes it read-only

Data types that are created by the programmer are known as

a. variables b. abstract data types (ADTs) c. functions d. parameters e. None of these

Answer the following statements true (T) or false (F)

1. In the days before PCs and the Internet, Intel’s mainframes dominated the information technology marketplace. 2. An IBM mainframe’s instruction counter is called the PCW. 3. Bits 8-11 of an IBM mainframe’s PSW hold the instruction address. 4. Bits 14 and 15 of an IBM mainframe’s PSW indicate the task’s state. 5. The last 31 bits of an IBM mainframe’s PSW hold the instruction address, the address of the next instruction to be executed.