Who invented television? Gods help me

1. Inventor: In 1924, the British Baird invented the most primitive television, which used electricity to transmit images. RCA launched the world's first black-and-white television in 1939, set the national color television standard in 1953, and launched RCA color television in 1954. 2. Working principle: Since radio frequency signals are mixed with some interference signals during air transmission and attenuate as the transmission distance increases, after the TV receives weak radio frequency TV signals from cables or antennas (RF-IN), First, it needs to be demodulated through a tuner, and after amplification, mixing and detection, the high-frequency carrier component is filtered out to obtain a composite full TV signal in PAL, NTSC or SECAM format. Separate audio and video signals from the full TV signal. The audio signal is processed by the audio circuit and then sent to the speaker for output. The video signal is amplified by video, and the brightness and chrominance signals are separated to obtain the YC component signal. Finally, the YC component signal is converted into YUV and then into RGB component signal and sent to the picture tube for display. In the full TV signal, since the chrominance signal occupies a bandwidth of 2.6MHz, the electronic circuit of the TV sometimes directly intercepts the low-end brightness signal of about 3MHz when processing the brightness and chrominance signals separately. In this case, although the TV screen can achieve a horizontal resolution of about 500 lines, the actual horizontal resolution of the TV signal input from the antenna is only about 260 lines. In addition, the signal strength of different channels is different, and the image decomposition rate finally reflected on the fluorescent screen is also different.