Digital system problems 3-46. Redraw the programmable connection matrix from Figure 3-44. Label the output signals (horizontal lines) from the connection matrix (from top row to bottom row) as follows: AAABADHE. Draw an X in the appropriate intersections to short-circuit a row to a column and create these connections to the logic circuit. 3-47.* Write the HDL code in the language of your choice that will produce the following output functions: X=A+BY=ABZ=A+B+C 48. Write the HDL code in the language of your choice that will implement the logic circuit of Figure 3-39. (a) Use a single Boolean equation. (b) Use the intermediate variables V,W,X, and Y. Explain "programming" of a PLD. - Explain the role of compiling. Many digital circuits today are implemented using programmable log (PLDs). These devices are not like microcomputers or microcontro "run" the program of instructions. Instead, they are configured elect and their internal circuits are "wired" together electronically to for circuit. This programmable wiring can be thought of as thousands o tions that are either connected (1) or not connected (0). Figure 3-44 small area of programmable connections. Each intersection betwe (horizontal wire) and a column (vertical wire) is a programmable co You can imagine how difficult it would be to try to configure these d placing 1s and 0s in a grid manually (which is how they did it back in th The role of the hardware description language is to provide a and convenient way for the designer to describe the operation of th in a format that a personal computer can handle and store convenier computer runs a special software application called a compiler to from the hardware description language into the grid of 1 s and 0 s FIGURE 3.44 Configuring Digl hardware connections INP with programmable logic devices..

1. Digital system problems
3-46. Redraw the programmable connection matrix from Figure 3-44. Label the output signals
(horizontal lines) from the connection matrix (from top row to bottom row) as follows:
AAABADHE. Draw an X in the appropriate intersections to short-circuit a row to a column and
create these connections to the logic circuit. 3-47.* Write the HDL code in the language of your
choice that will produce the following output functions: X=A+BY=ABZ=A+B+C 48. Write the
HDL code in the language of your choice that will implement the logic circuit of Figure 3-39. (a)
Use a single Boolean equation. (b) Use the intermediate variables V,W,X, and Y.
Explain "programming" of a PLD. - Explain the role of compiling. Many digital circuits today
are implemented using programmable log (PLDs). These devices are not like microcomputers or
microcontro "run" the program of instructions. Instead, they are configured elect and their
internal circuits are "wired" together electronically to for circuit. This programmable wiring can
be thought of as thousands o tions that are either connected (1) or not connected (0). Figure 3-44
small area of programmable connections. Each intersection betwe (horizontal wire) and a column
(vertical wire) is a programmable co You can imagine how difficult it would be to try to
configure these d placing 1s and 0s in a grid manually (which is how they did it back in th The
role of the hardware description language is to provide a and convenient way for the designer to
describe the operation of th in a format that a personal computer can handle and store convenier
computer runs a special software application called a compiler to from the hardware description
language into the grid of 1 s and 0 s FIGURE 3.44 Configuring Digl hardware connections INP
with programmable logic devices.