In this paper

two common schemes

Digital Signal Processing（DSP） and Field Programmable Gate Array（FPGA）

for the implementation of signal acquisition and spectrum display in embedded systems are discussed and their: advantages and disadvantages summarized and analyzed.A detailed introduction is given to the implementation of a specific FPGA.Modular design is adopted for the system and all the functional modules described in Verilog HDL

having independent IPR.Comprehensive simulation results indicate that the system satisfies the requirements for high-speed signal acquisition and spectrum display.