For 16 x 8 memory organization =memory with 16 word each of 8 bit
16 word require 4 Address Lines (24=16)
8 bit of 16x8 memory org. require 8 Data Lines
by default :CONTROL PINS :read + write = 2 pins
Total External Connections = 4+8+2=14 connections
If we consider power and ground connections also (+ 2 more connection)
then we get,
Total External Connections = 4+8+2+2=16 connections
The above diagram is of MEMORY INTERFACE. It shows that memory chip externally connected mainly with address lines , data lines and control signals.