1 In Label a_4 rotation In rotation Label a_3 In rotation Label a_2 In rotation Label a_1 In rotation Label b_4 In rotation Label b_3 In rotation Label b_2 In rotation Label b_1 74283.dig Ground VDD Out Label s_4 Out Label s_3 Out Label s_2 Out Label s_1 In Label c_i rotation Out Label c_o