Chief component of first generation computer was

A. Transistors ट्रांजिस्टर

B. Vacuum Tubes and Valves वैक्यूम ट्यूब और वाल्व

C. Integrated Circuits एकीकृत सर्किट

D. None of above इनमे से कोई भी नहीं

Correct Answer is :

B. Vacuum Tubes and Valves

Explanation

Transistors were used for second generation computers and integrated circuits in third generation. First generation computers used vacuum tubes and valves as their main electronic component. Vacuum Tubes were invented by Lee DeForest in 1908.