How many address lines are needed to address each machine location in a 2048 x 4

How many address lines are needed to address each machine location in a 2048 x 4 memory chip?

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1) In 1830, Charles Babbage designed a machine called the Analytical Engine which he showed at the Paris Exhibition. In which year was it exhibition?

2) Which is not a computer classification?

3) A system is

4) Mnemonic a memory trick is used in which of the following language?

5) The octal equivalence of 111010 is