Number of Data Lines in 256*4

To understand how many data lines are present in a 256*4 setup, let's break down the terms and their meanings.

256: This number represents the number of address lines. Address lines are used to specify the memory location or register being accessed. In this case, we have 256 address lines, which means we can address 256 different memory locations or registers.

4: This number represents the number of bits in each data line. Data lines are used to transfer data between the memory and the processor. In this case, we have 4 bits in each data line, which means we can transfer 4 bits of data at a time.

Now, let's calculate the number of data lines.

Formula: Number of data lines = 2^(number of address lines) * (number of bits in each data line)

Substituting the values:
Number of data lines = 2^(256) * 4

Calculating 2^256 is an extremely large number, beyond the capacity of a normal calculator or computer. However, we can simplify the calculation by considering the power of 2.

Power of 2:
2^1 = 2
2^2 = 4
2^3 = 8
2^4 = 16
2^5 = 32
...
2^8 = 256

From the pattern, we can see that 2^8 is equal to 256. This means that 2^(256) is a very large number.

Now, let's calculate the number of data lines using the simplified formula:

Number of data lines = 256 * 4

Simplifying further:

Number of data lines = 1024

Therefore, the correct answer is option 'C' - 4.