※ 引述《lwnkawasaki (lwnkawasaki)》之銘言：
: Q:Use the NAND gates and NOT gates as few as possible to design a circuit that converts a 4-bit binary number to its corresponding two-digit BCD number .For example, if the input is D3D2D1D0=1100,then the out will be H3H2H1H0L3L2L1L0=0001 0010(12)
: (a)write out the corresponding truth table.
: (b)Derive the logic function for L2 in the form of product-of sum(POS)
: (c)Design the circuit for L2 with NAND gates or NOT gates as few as possible.
: In case it is needed,Karnaugh mapes may be used to simplify the logical function.
: 可以幫我解釋題目,並替我解出(a)(b)(c)3小題的答案嗎..謝謝^^
簡單來說 要你用NAND跟NOT去完成下列的電路
這個電路 可以將4位元的數字 轉換成 相對應的 兩位元BCD碼
舉例來講 (1100)2 = (12)10 = (0001 0010)BCD
(a)要你畫出真值表
(b)根據真值表去推出倒數第二位的表示
(c)有了POS之後,去推出相對應的電路
解題來說
(a)的話 就是硬畫16種可能,可以得到相對應的各位元BCD碼
(b).(c)請參考邏輯設計課本,這應該屬於很基礎的範圍
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