To answer this question, we need to understand the concept of solid state integrated circuits and their history.

Solid state integrated circuits, also known as microchips or simply ICs, are electronic devices that contain a large number of electronic components such as transistors, resistors, and capacitors, fabricated onto a small semiconductor material, typically silicon. These components are interconnected to perform specific functions, such as amplification, switching, or memory storage.

The first solid state integrated circuit was demonstrated in the 1950s. This breakthrough in technology revolutionized the field of electronics and paved the way for the development of modern computers and electronic devices.

Let's go through each option to understand why it is correct or incorrect:

Option A) 1950s - This option is correct because the first solid state integrated circuit was indeed demonstrated in the 1950s.

Option B) 1960s - This option is incorrect because the first solid state integrated circuit was demonstrated in the 1950s, not the 1960s.

Option C) 1970s - This option is incorrect because the first solid state integrated circuit was demonstrated in the 1950s, not the 1970s.

Option D) 1980s - This option is incorrect because the first solid state integrated circuit was demonstrated in the 1950s, not the 1980s.

The correct answer is A) 1950s. This option is correct because the first solid state integrated circuit was indeed demonstrated in the 1950s.

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• Wrong explanation