library(demo) {

cell(NAND4) {
area: 15;  
pin(A) { direction: input; } 
pin(B) { direction: input; } 
pin(C) { direction: input; } 
pin(D) { direction: input; } 
pin(Y) { direction: output; function: "(A*B*C*D)'"; } }

cell(NAND3) {
area: 12;  
pin(A) { direction: input; } 
pin(B) { direction: input; } 
pin(C) { direction: input; } 
pin(Y) { direction: output; function: "(A*B*C)'"; } }

cell(NAND2) {
area: 10;  
pin(A) { direction: input; } 
pin(B) { direction: input; } 
pin(Y) { direction: output; function: "(A*B)'"; } }

cell(AND4) {
area: 20;  
pin(A) { direction: input; } 
pin(B) { direction: input; } 
pin(C) { direction: input; } 
pin(D) { direction: input; } 
pin(Y) { direction: output; function: "(A*B*C*D)"; } }

cell(AND3) {
area: 15;  
pin(A) { direction: input; } 
pin(B) { direction: input; } 
pin(C) { direction: input; } 
pin(Y) { direction: output; function: "(A*B*C)"; } }

cell(AND2) {
area: 12;  
pin(A) { direction: input; } 
pin(B) { direction: input; } 
pin(Y) { direction: output; function: "(A*B)"; } }

cell(NOR4) {
area: 20;  
pin(A) { direction: input; } 
pin(B) { direction: input; } 
pin(C) { direction: input; } 
pin(D) { direction: input; } 
pin(Y) { direction: output; function: "(A+B+C+D)'"; } }

cell(NOR3) {
area: 15;  
pin(A) { direction: input; } 
pin(B) { direction: input; } 
pin(C) { direction: input; } 
pin(Y) { direction: output; function: "(A+B+C)'"; } }

cell(NOR2) { 
area: 10; 
pin(A) { direction: input; } 
pin(B) { direction: input; } 
pin(Y) { direction: output; function: "(A+B)'"; } }

cell(OR4) {
area: 20; 
pin(A) { direction: input; } 
pin(B) { direction: input; } 
pin(C) { direction: input; } 
pin(D) { direction: input; } 
pin(Y) { direction: output; function: "(A+B+C+D)"; } }

cell(OR3) {
area: 15; 
pin(A) { direction: input; } 
pin(B) { direction: input; } 
pin(C) { direction: input; } 
pin(Y) { direction: output; function: "(A+B+C)"; } }

cell(OR2) {
area: 10; 
pin(A) { direction: input; } 
pin(B) { direction: input; } 
pin(Y) { direction: output; function: "(A+B)"; } }

cell(XNOR2) {
area: 25; 
pin(A) { direction: input; } 
pin(B) { direction: input; } 
pin(Y) { direction: output; function: "(A^B)'"; } }

cell(XOR2) { 
area: 25;
pin(A) { direction: input; } 
pin(B) { direction: input; } 
pin(Y) { direction: output; function: "(A^B)"; } }

cell(BUF) { 
area: 12;
pin(A) { direction: input; } 
pin(Y) { direction: output; function: "A"; } }

cell(NOT) {
area: 6;
pin(A) { direction: input; } 
pin(Y) { direction: output; function: "A'"; } }

}