Zero

Content

step_onePrevious

Nextwire

Build a circuit with no inputs and one output that outputs a constant 0

Now that you've worked through the previous problem, let's see if you can do a simple problem without the hints.

HDLBits uses Verilog-2001 ANSI-style port declaration syntax because it's easier to read and reduces typos. You may use the older Verilog-1995 syntax if you wish. For example, the two module declarations below are acceptable and equivalent:

module top_module ( zero ); output zero; // Verilog-1995 endmodule

module top_module ( output zero ); // Verilog-2001 endmodule

Expected solution length: Around 1 line.

module top_module( output zero );

// Module body starts after semicolon

Fun fact: For Quartus synthesis, not assigning a value to a signal usually results in 0. This problem is actually easier than the previous one.

Link
https://hdlbits.01xz.net/wiki/Zero
Summary
The article presents a simple task in digital circuit design using Verilog, specifically requiring the creation of a module that outputs a constant value of 0 with no inputs. It highlights the use of Verilog-2001 ANSI-style port declaration for better readability, although Verilog-1995 syntax is also acceptable. The expected solution is concise, with the module definition being straightforward. A fun fact is mentioned regarding Quartus synthesis, noting that not assigning a value to a signal typically defaults it to 0, making this task simpler than a previous one. The article emphasizes clarity and simplicity in coding practices within hardware description languages.