Counter and Theme Toggle - Verilog Typing CST Test
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Counter and Theme Toggle — Verilog Code
Demonstrates a simple counter with theme toggle using Verilog registers and always blocks.
module Counter(
input clk,
input reset,
output reg [31:0] count,
output reg isDark
);
always @(posedge clk or posedge reset) begin
if (reset) begin
count <= 0;
isDark <= 0;
end else begin
count <= count + 1;
isDark <= ~isDark;
end
end
endmoduleVerilog Language Guide
Verilog is a hardware description language (HDL) used to model, simulate, and design digital circuits such as CPUs, FPGAs, ASICs, and SoCs. Known for its C-like syntax, simplicity, and dominance in commercial chip design.
Primary Use Cases
- ▸ASIC and SoC design
- ▸FPGA development
- ▸Digital logic design (ALUs, FSMs, DSP blocks)
- ▸Processor architecture modeling
- ▸Hardware simulation & verification
Notable Features
- ▸C-like syntax (begin/end, if, case)
- ▸Concurrent and procedural blocks
- ▸Gate-level, RTL, and behavioral modeling
- ▸Synthesizable hardware constructs
- ▸Rich simulation capabilities
Origin & Creator
Developed in 1984 by Phil Moorby at Gateway Design Automation; standardized as IEEE 1364.
Industrial Note
Verilog powers most commercial semiconductor chips - including CPUs, GPUs, networking ASICs, and FPGA IP cores.