Q 1) Show how SRAM of 16Mx4 can be organized, how many number of pins for such a memory? Q 2) Show how the memory in branch Q1-A can be organized using time division address multiplexing, how many number of pins for such a memory? Q 3)_How can you expand 1Kx4 to be 4Kx8 ? Q 4) Construct an astable multivibrator using 555IC, select the values of RA and RB in order to have about 50% duty cycle and then select the value of C in order to generate a signal with frequency of 10KHz