The document discusses the five generations of computers from the 1940s to present. The first generation used vacuum tubes, the second used transistors which were smaller and faster. The third generation used integrated circuits, and the fourth used microprocessors that put all components on a single chip. The fifth generation involves artificial intelligence, and computer technology now allows interconnection and sharing of information globally through information and communication technology.

1. Generations of computers
COMPUTER

2. GENERATIONS

3. FIRST GENERATION(1940-56):VACCUM
TUBES

4. SECOND GENERATION (1956-
63):TRANSISTORS
• Second generation computer systems took
advantage of semiconductor technology
which meant that transistors replaced the
vaccum tubes. This resulted in reduced
physical size, faster computing and greater
power. The transistor was initially
developed by Bell Laboratories, a large US
corporation.

5. THIRD GENERATION(1964-EARLY1970S):
INTEGRATED CIRCUITS

6. FOURTH GENERATION(EARLY1970S-TILL
DATE):MICROPROCESSORS
• From integrated circuits to large scale integration
to very large integration; this was the start of the
microprocessor age. All the components of a
computer (Central Processing Unit, memory, and
input and output controls) was located on a
minuscule chip. The microprocessor used
continued to improve from the 4004, 8086,80286
to the 80486, then Pentium, Pentium2, Pentium3
and now Pentium4.

7. FIFTH GENERATION(PRESENT AND
BEYOND): ARTIFICIAL INTELLIGENCE

8. CLASSIFICATION OF COMPUTERS

9. MICRO COMPUTER

14. EXPLOSION OF COMPUTERS
The computer technology grows
exponentially leading to information and
communication technology where
computers are interconnected for sharing
of information instantaneously over the
globe in a very cheap rate. This has led
to the presence of computers everywhere
at home, offices, schools and shops.