239. How many bytes are there in 1111 1011 0111 0100 1010
A.2
B.4
C.2
D.6

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240. Fig. .7.23 shows an 8-bit LED display. A light circle means that a LED is ON (binary 1) and a dark circle means a LED is OFF (binary 0). What is the decimal equivalent of the binary number displayed?
A.100
B.121
C.144
D.172

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241. A micro-computer has memory locations from 0000 to FFF, each storing 1 byte. How many bytes can the memory store?
A.12,333
B.14,666
C.16,384
D.16,655

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242. A micro-computer has a 64 K memory. What is the hexadecimal notation for the first memory location?
A.0
B.FFFF
C. OFFF
D. 3FFF

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243. In the above case the hexadecimal notation for the last memory location is
A.0
B.FFFF
C.3FFF
D. 5FFF

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244. EAROM memory is
A. magnetically alterable
B. electrically alterable
C. either of (A) or (B) above
D. none of the above

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245. A secondary memory is
A. always volatile
B. always costlier than prima!), memory
C. always slower than primary memory
D. none of the above

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