Good question and good answers above. The world of Internet of Things/Embedded has all kinds of things (refrigerators, thermostats, cameras etc.) that were once not programmable (20 yrs. ago) but now can be programmed remotely and can connect to the world via the Internet. If you put a Raspberry Pi Zero W ($5) with a camera module on it on a wifi network it is a computer in my opinion.
I think Martin makes a good point that the typical washing machine, with microcontroller but no processor, isn't really a computer. Sonic and Yathin Babu's comments are also helpful. Thank you Gaurav Rawat for this question.
Rumy, my TV is an electronic device but it's not a computer ;-) However, that depends on your definition of a computer.
Not everything that is digital even contains a cpu. Some digital devices can be controlled by a state machine implemented in hardwired logic. There are also such things as analogue computers that use mechanical components.