Darbas anglų kalba. Garsų generatorius su 8051 mikrokontroleriu. Introduction. Background research. Human hearing. Signal generator. Tone generator. 8051 microcontroller. LCD (Liquid crystal display). Loudspeaker or buzzer. Hardware Design. Block diagram. Basic layout of the main board. Circuit diagram. Connecting each component. Software Design. Testing and evaluation. Problems occurred during the project. Future development. Conclusion. Appendix (6 p.).