Explanation: In a memory IC, the number of address pins determines the total number of unique memory locations, while the number of data pins indicates how many bits each location can store. With 4 address pins, the IC can access $2^4 = 16$ distinct memory locations. Each of these locations is capable of storing a "word" of data. The 4 data bus input/output pins signify that each memory location (or word) is 4 bits wide. To find the total number of individual memory cells (bits), multiply the number of locations by the number of bits per location: Total cells = (Number of locations) $\times$ (Bits per location) Total cells = $16 \times 4 = 64$ cells. Therefore, the memory IC contains 64 individual memory cells.