If you mean the first TV ever (a mechanical one) it was 2 people, if you mean the first electronic TV it was just one person, but if you mean the first commercially built TV that was sold the answer is too complicated to ever determine a number.
The first prototype mechanical TV was built by Georges Rignoux and A. Fournier in Paris in 1909.
The first prototype electronic TV was built by Philo Taylor Farnsworth in San Francisco in 1927.
1 person or it depends on what television your building.
4 people
20 people
Lots of people
One.
6
2
it took 36,000 people to construct the first temple
The exact number of people it takes to make a medieval catapult. :-)
200,000
1000
13,765 people
100