Question

1. Pep/9 has one index register (True / False)

2. The hidden bit in floating point is not stored but is always there. (True / False)

3. A machine language program can change itself. (True / False)

Answer 1

1. TRUE, because it stores a number used to modify the address (In address field) and provides an efficient way to access a number of consecutive locations.

2. TRUE, because many floating point representations have an implicit hidden bit in the mantissa. This is a bit which is present virtually in the mantissa, but not stored in memory because its value is always 1 in a normalized number.

3. FALSE, because In computer programming, machine code, consisting of machine language instructions, is a low-level programming language used to directly control a computer's central processing unit (CPU). Each instruction causes the CPU to perform a very specific task, such as a load, a store, a jump, or an arithmetic logic unit (ALU) operation on one or more units of data in the CPU's registers or memory.