128 x 8 memory chips:

If it is organised as a 128 x 8 memory chips, then it has got 128 memory words of size 8 bits. So the size of data bus is 8 bits and the size of address bus is 7 bits (). The storage organization of 128 x 8 memory chip is shown in the figure 3.6.
                                   
                                                        Figure 3.6: 128 x 8 Memory Chip