CD4585是一个4位数值比较器，它具有两组4位输入信号a(3)~a(0)和b(3)~b(0)， 3个级联输入信号a_g_b、a_e_b和a_l_b，以及3个输出信号a_greater_than_b、a_equal_to_b和a_less_than_b，如下图所示。LIBRARY IEEE；USE IEEE.Std_logic_1164.ALL；ENTITY cd4585 IS PORT (a_g_b...
The digital frequency meter measurement range of lHz ~ 1MHz, response time of 15 seconds or less; the test results from the four seven-segment digital tube display stability, measurement error is less than equal to 1%. Simulation waveforms and analysis results show that the designed circuit ...
4489是骗子吧？垃圾。我来告诉你，这个的确是简单。数值比较器还是需求不够明确。你的输入输出，有什么要求具体的发出来看看。一般的思路就是二选一吗！！！
Example expression which is true if i is greater than or equal to 0, and less than 28=256: i >= 0 and i < 2**8; Relational operators: = equal /= not equal < less than <= less than or equal > greater than >= greater than or equal ...
FOR i IN 0 TO max_limit LOOP IF (int_a <= 0) THEN -- less than or EXIT; -- equal to ELSE int_a := int_a -1; q(i) <= 3.1416 / REAL(int_a * i); -- signal END IF; -- assign END LOOP; y <= q; END PROCESS; ...
Logical Operators andLogical AndorLogical OrnandLogical NandnorLogical NorxorLogical XorxnorLogical Xnor Relational Operators =Equal/=Not Equal<Less Than<=Less Than or Equal To>Greater Than>=Greater Than or Equal To Concatenation Operator &Concatenate...
Logical Operators andLogical AndorLogical OrnandLogical NandnorLogical NorxorLogical XorxnorLogical Xnor Relational Operators =Equal/=Not Equal<Less Than<=Less Than or Equal To>Greater Than>=Greater Than or Equal To Concatenation Operator &Concatenate...
The divisor divides a group of bits when the divisor has a value less than or equal to the value of those bits. Therefore, the quotient is either 1 or 0. The division algorithm performs either an addition or subtraction based on the signs of the divisor and the partial remainder. There ...
SELECT z_out <= a_input WHEN "000" | "001" | "111", b_input WHEN "011" | "101", c_input WHEN "010", d_input WHEN "100", e_input WHEN "110", 'X' WHEN OTHERS; END beh; The signal z_out gets the value of a_input when sel is equal to "000", "001" or "111". ...
EDA与VHDL 实验报告--16位cpu 设计 [EDA与VHDL 实验报告][16位CPU设计]0 / 19