Remarks

• The storage elements are often simplified to reduce the number of transistors.
• For example, with care one can replace the flipflop by a capacitor.
• Also, with large memory chips it is not feasible to connect the data input and output and write enable lines directly to all storage elements.
• Also, with care one can use the same line for data input and data output.
• Today, RAM chips with 128 Million storage elements are on the market.
• The capacity of RAM chips doubles approximately every year.