(a) Refer to the Figure 2(b) on page 8 in Unit 1 of Block 2. Draw the Internal organisation of an 8×8 RAM. Explain all the Input and Output of this organisation. Also answer the following: (i) How many data input and data output lines does this RAM needs? Explain your answer. (ii) How many address lines are needed for this RAM? Give reason in support of your answer.

 I apologize for the inconvenience, but I don't have access to specific figures or pages from Unit 1 of Block 2. However, I can provide a generic explanation for an 8x8 RAM and answer your questions.

 Internal Organization of an 8x8 RAM:

 Structure:

An 8x8 RAM typically has an array of 8 rows and 8 columns, resulting in 64 memory cells. Each cell stores a single bit of data.

 Inputs and Outputs:

1. Address Lines (Inputs):

   - The address lines are used to select a specific memory location. For an 8x8 RAM, you would need 6 address lines (2^6 = 64, addressing all 64 locations).

   - These lines specify the row and column of the memory cell to be accessed.

2. Data Input Lines (Inputs):

   - The data input lines are used to provide the data that needs to be written into the selected memory location.

   - Since each memory cell stores 1 bit, you would have 1 data input line.

3. Write Enable (Input):

   - Write Enable (WE) is an input signal that, when active, allows data to be written into the selected memory location.

4. Chip Enable (Input):

   - Chip Enable (CE) is an input signal that activates or deactivates the entire RAM chip.

   - When CE is active, the RAM responds to address and control inputs. When inactive, the RAM is disabled.

5. Output Enable (Input):

   - Output Enable (OE) is an input signal that, when active, enables the output buffers.

   - When OE is inactive, the outputs are in a high-impedance state.

6. Data Output Lines (Outputs):

   - The data output lines provide the stored data from the selected memory location.

   - Since each memory cell stores 1 bit, you would have 1 data output line.

Answers to Your Questions:

 (i) Data Input and Data Output Lines:

-Data Input Lines:1 (each memory cell stores 1 bit)

-Data Output Lines: 1 (each memory cell outputs 1 bit)

(ii) Address Lines:

- Number of Address Lines: 6

- Reason: With 6 address lines, you can uniquely address 2^6 = 64 locations, which is sufficient to cover all the memory cells in the 8x8 RAM.

In summary, for an 8x8 RAM:

- Data Input Lines: 1

- Data Output Lines: 1

- Address Lines: 6