Subject:Modern Control Technology--Components & Systems I need answer these 2 question as soon as possible 4, A computer

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Subject:Modern Control Technology--Components &
Systems
I need answer these 2 question as soon as
possible
4, A computer uses an 8-bit DAC to create a voltage
that represents the temperature in an oven. Temperature values
range from –20°C to 120°C. What is the resolution? If the
temperature must be represented to within 0.1°C, can
the 8-bit DAC be used? If not, can we select a 10-bit
ADC?
6, In a certain system, an electric heating element was found to
increase the temperature of a piece of metal 8° for each ampere of
current. The metal expands 0.003 cm/deg and pushes on a load
sensor which outputs 1V/0.02cm of compression. If the load
sensor outputs 6V voltage, find the input current of
electric heating element.