In the year of 1970, get more details from the Wikipedia page of digital watch.
Invention
When you have an invention, the first step is to get a patent for the invention.
his first invention was the sespension bridge
The Apple I, a personal computer was the first invention of apple.
His first invention was the Apple lisa
The Chinese were the first to use paper as an invention.
I believe a cave man. The first invention was probably the wheel.
Gyro's First Invention has 20 pages.
watch the invention of lying for answers;)
Louis Brennans First invention was the underwater torpedo.... Louis Brennan.
The magnetic compass was the first invention that might be called modern.
tephone is the first invention of jame hutton