ABSTRACT
A simple computer (ASC) arithmetic/logic unit (ALU) was designed to perform addition, complementation, and single-bit shift operations on 16-bit binary data, in parallel. The four basic arithmetic operations (addition, subtraction, multiplication, and division) can be performed using this ALU and appropriate software routines, as described in Chapter 5. Advances in integrated circuit (IC) technology have made it practical to implement most of the ALU functions required in hardware, thereby minimizing the software implementation and increasing the speed. In this chapter, we will describe a number of enhancements that make the ASC ALU resemble a practical ALU.
