Chapter 3 Number Systems and Boolean Algebra 3.1.2 Positional notation Once the digits of a number system are understood, larger numbers are constructed by using positional notation. In grade school, we learned that the position to the left of the units position was the tens position, the position to the left of the tens position was the hundreds position, and so forth.(An example is the decimal number 132 This number has 1 hundred. 3 tens and 2 units. What probably was not learned was the exponential value of each position: The units position has a weight of 100 or 1; the tens position has weight of 101, or 10 and the hundreds position has a weight of 102, or 100. 旦我们理解了计数制的数字后,就可用位计数法构造更大的数值。在小学时我 们都学过个位的左边一位是十位,十位左边一位是百位,以此类推(例如十进制数 132,这个数字有一个百,三个十和两个一)。或许我们没有学过每个位的指数值 个位的权为00,即1;十位的权为101或10;而百位的权为102或100 N什第机专出关语 3-8Chapter 3 Number Systems and Boolean Algebra 计算机专业英语 3-8 Once the digits of a number system are understood, larger numbers are constructed by using positional notation. In grade school, we learned that the position to the left of the units position was the tens position, the position to the left of the tens position was the hundreds position, and so forth. (An example is the decimal number 132: This number has 1 hundred, 3 tens, and 2 units.) What probably was not learned was the exponential value of each position: The units position has a weight of 100 or 1; the tens position has weight of 101, or 10; and the hundreds position has a weight of 102, or 100. 3.1.2 Positional Notation 一旦我们理解了计数制的数字后，就可用位计数法构造更大的数值。在小学时我 们都学过个位的左边一位是十位，十位左边一位是百位，以此类推(例如十进制数 132,这个数字有—个百，三个十和两个一)。或许我们没有学过每个位的指数值： 个位的权为l00，即1；十位的权为101或10；而百位的权为102或l00