
427RAM, Address and Data Buses, Memory Decoding, Semiconductor Memories
All the RAM ICs, ROM ICs and device ICs can be organized and connected to and fro
a common set consisting of the unidirectional address and bi-directional data buses and a
control bus.
Control bus consists of the signals for read and write, memory and IO, address latch (in
case of existence of partially or fully multiplexed address-cum data lines) and reset.
17.7 EXTERNAL DECODING OF THE ADDRESS BUS TO
THE INTEGRATED CIRCUITS OF A SYSTEM
Let us learn decoding by the following example. Let us design a decoding circuit for the
following memories at the following assigned addresses. ...