A [Digital] computer is defined as a device that can run a sequence of instructions (a program) and "make decisions" (jump to different parts of the program) depending on results of other instructions.
eg. A player piano using a punched paper roll or a card-controlled weaving loom use instructions to perform actions but are not computers.
Most of the current versions of the things you describe _contain_ computers now, but as "Embedded" systems rather than being computers in their own right; you cannot use it as a computer, just as what the designer made it do.
The computer part is not directly usable or controllable, it's emulating a fixed-function device.
Even some toasters use a tiny computer (a microcontroller) as it's cheaper to use that than design a special function timer - but as far as the outside world is concerned, it's a timing chip.
There is a big difference between a computer that someone can program and use for general things and an embedded system that acts like a single function device.
Modern cars have many embedded CPUs in different parts of the system but you don't consider the car itself to be a computer, for good reason, it's obviously not...
Example of the type of microcontroller that is typically used in a toaster, if it works like that:
For info.. From the early 1600s to around the 1950s, "Computer" was a job title, like being an accountant or mathematician.
It was someone whos job was to do complex calculations - computations - such as for engineering design.
It was only when computing machines started to become common that people started to assume the word meant "Digital computer" (which is the proper full name) and the job is now called "Human computer".
eg. - the computers in this 1929 photo are the people, using mechanical adding machines to do their work...