My taksun clock is showing some digital data. how toremove it and come to original mode?

'Classique oven clock' doesn't really provide and answer like FULL 'make model (what it is)' would.

It sounds like your oven is in partial programming mode. Pull the mains plug or flip the breaker for 2 minutes.

https://www.google.com/search?q=Classique+digital+clock

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Help in the link for various models, but it is much easier to use an iPhone. I have reoccurring alarms for a radio phone in competition.

https://www.google.com/search?q=Taksun+digital+clock+manual

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Press buttons in this sequence ->
M -> M -> M
shows sec blinking
-> D to reset seconds
-> S to move to min - hr - date - month - day - sec ....
-> M to finish :)

Hold down Mode(M) key for 3 seconds, M again for house, minutes, date change. Hold 3 seconds again to confirm.

Mannual

Push M button twice to enter alarm set mode.
Push S to choose between hours and minutes.
Push D to set hours and minutes.
To turn on and off the alarm, go to the main clock display screen. Hold the S button and push D to turn on or off.

Please see the answer in:
http://www.fixya.com/support/t23855649-deactivate_hourly_chimes_in_taksun_ts

When in clock setting mode, press Random.