Chapter 3 Number Systems and Boolean Algebra 3.1.1 Digits Before numbers are converted from one number base to another the digits of a number system must be understood. Early in our education. we learned that a decimal or base 10 number was constructed with 10 digits: 0 through 9. The first digit in any numbering system is always a zero. For example, a base 8(octal) number contains 8 digits: 0 through 7; a base 2(binary) number contains 2 digits: 0 and 1 将数从一种数制向另一种数制转换之前,必须了解数的计数系统。在早期 教育中,我们已学习了十进制数,或以10为基的数,它由10个数字组成:0 到9。任何计数制的第一个数字总是零,这种规则适用于任何其他数制。例 如,以8为基的数(八进制包含8个数字:0到7,而以2为基的数(二进制)包 含2个数字:0和l 《什第机专出美语 3-6Chapter 3 Number Systems and Boolean Algebra 计算机专业英语 3-6 Before numbers are converted from one number base to another, the digits of a number system must be understood. Early in our education, we learned that a decimal, or base 10, number was constructed with 10 digits: 0 through 9. The first digit in any numbering system is always a zero. For example, a base 8 (octal) number contains 8 digits: 0 through 7; a base 2 (binary) number contains 2 digits: 0 and 1. 3.1.1 Digits 将数从—种数制向另一种数制转换之前，必须了解数的计数系统。在早期 教育中，我们已学习了十进制数，或以10为基的数，它由10个数字组成：0 到9。任何计数制的第一个数字总是零，这种规则适用于任何其他数制。例 如，以8为基的数(八进制)包含8个数字：0到7，而以2为基的数(二进制)包 含2个数字：0和l