Read the paragraph given below and fill in the blanks using appropriate prepositions.

Computers have been shrinking ……………………. size ever since the introduction …………………………. the concept almost two centuries ……………………………… The latest developments ……………………………. microchip manufacturing is likely to make them even smaller.

The earliest prototype …………………………. a computer was invented ………………………….. Charles Babbage. This machine was called the Difference Engine. It has 26,000 parts and weighed ……………………………. 15 tons.

The first electronic computer was introduced towards the end …………………………. World War II. It had 1,500 vacuum tubes and was even heavier than Babbage’s computer. The introduction ………………………….. the silicon based microchip ………………………………. the early 1950s changed the destiny ………………………… computers …………………………. ever. The first microchip computers were still very complex. They had more than 100,000 transistors and measured several meters …………………………………

Today’s microchips are incredibly small and scientists are working ………………………….. making them even smaller.

Answers

Computers have been shrinking in size ever since the introduction of the concept almost two centuries ago. The latest developments in microchip manufacturing are likely to make them even smaller.

The earliest prototype of a computer was invented by Charles Babbage. This machine was called the Difference Engine. It had 26,000 parts and weighed over 15 tons.

The first electronic computer was introduced towards the end of World War II. It had 1,500 vacuum tubes and was even heavier than Babbage’s computer. The introduction of the silicon based microchip in the early 1950s changed the destiny of computers for ever. The first microchip computers were still very complex. They had more than 100,000 transistors and measured several meters across.

Today’s microchips are incredibly small and scientists are working on making them even smaller.