what is mean by 4 -channel rc or 6 channel rc....i mean what is mean by 4 channel or 6 channel?...how can we use these channels for wireless transmission???can we program the remote control for movements or  can it done by simply connecting wires??? ....help me pleeeez

Like we have a tv remote with different buttons each button can be understood as a ch.

for RC remote we have 2,3,4,6 ...ch so each ch can be used either to UP or Down ( similar to Volume in a tv remote).

If you connect to a servo ( a device with motor and a ckt ) when connected to a RX. can respond to UP and down signal from TX. that too directly proportional to the TX stick movement.....

please search and read for details...