參數(shù)資料
型號(hào)： NSB8
廠商： Electronic Theatre Controls, Inc.
英文描述： BASIC interpreter for Z80 family
中文描述： Z80的BASIC解釋為家庭
文件頁數(shù)： 86/158頁
文件大?。?/td> 752K
代理商： NSB8
grifo
ITALIAN TECHNOLOGY
Page 74
NSB8 Rel. 5.10
EXPRESSIONS
Any valid combination of numeric constants, numeric variable names, operators, function calls, and
array element names is an expression (see sections FUNCTION and USING ARRAYS for complete
details concerning function calls and array element names. These are two advanced features of
NSB8
which are not covered in this introductory section). A single constant, 3.14, or variable name, A, is
an expression all by itself. In contrast, long constructs such as
(NOT(3+(SQRT(X*Y) /M3-47) /8)^3
are also numeric expressions.
EXAMPLES OF LEGAL NUMERIC EXPRESSIONS
3.14
43+A
((X+2)^(Q-R))*SQRT(Z)
EXAMPLES OF ILLEGAL NUMERIC EXPRESSIONS
438,000.33
7**Y
((3*ABS(A))+4 (Reason: improper parentheses nesting)
(Reason: constants cannot contain commas)
(Reason: two operators in a row are not allowed)
ORDER OF EVALUATION OF OPERATORS
Is 7+3*2 equal to 20 or 13 This depends on whether the addition or multiplication is performed
first. For purposes of determining the order of evaluation of operators, each operator is said to have
a certain precedence. The rule for the order of evaluation is as follows: higher precedence operators
are evaluated first, and operators of equal precedence are evaluated left to right. Operators enclosed
in parentheses are evaluated before operators not enclosed in parentheses. When there are parentheses
within other parentheses, operators within the innermost parentheses are evaluated first. The
operators are listed below in order of decreasing precedence, that is operators which are higher in the
list have higher precedence than those toward the bottom of the list. Operators on the same line have
equal precedence.
NOT, -
^
* , /
+ , -
=,<,>,<>,<=,>=
AND
OR
(negates a number,unary minus)
(exponentiation)
(multiplication and division)
(addition and subtraction)
(relationals)
(boolean sum)
(boolean multiplication)
Thus 7+3*2 is equal to 13, but (7+3)*2 is 20. Also, 3*8/2 is 12, -5+4 is -1 (the - is a unary minus here),
and (1=2 OR 3=1) is 0.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NSB8AT 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Glass Passivated General Purpose Plastic Rectifier
NSB8AT/31 功能描述:整流器 50 Volt 8.0 Amp 125 Amp IFSM RoHS:否 制造商:Vishay Semiconductors 產(chǎn)品:Standard Recovery Rectifiers 配置: 反向電壓:100 V 正向電壓下降: 恢復(fù)時(shí)間:1.2 us 正向連續(xù)電流:2 A 最大浪涌電流:35 A 反向電流 IR:5 uA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-221AC 封裝:Reel
NSB8AT/45 功能描述:整流器 50 Volt 8.0 Amp 125 Amp IFSM RoHS:否 制造商:Vishay Semiconductors 產(chǎn)品:Standard Recovery Rectifiers 配置: 反向電壓:100 V 正向電壓下降: 恢復(fù)時(shí)間:1.2 us 正向連續(xù)電流:2 A 最大浪涌電流:35 A 反向電流 IR:5 uA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-221AC 封裝:Reel
NSB8AT/81 功能描述:二極管 - 通用，功率，開關(guān) 50 Volt 8.0 Amp 125 Amp IFSM RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Switching Diodes 峰值反向電壓:600 V 正向連續(xù)電流:200 A 最大浪涌電流:800 A 配置: 恢復(fù)時(shí)間:2000 ns 正向電壓下降:1.25 V 最大反向漏泄電流:300 uA 最大功率耗散: 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:ISOTOP 封裝:Tube
NSB8AT-E3/31 功能描述:整流器 50 Volt 8.0 Amp 125 Amp IFSM RoHS:否 制造商:Vishay Semiconductors 產(chǎn)品:Standard Recovery Rectifiers 配置: 反向電壓:100 V 正向電壓下降: 恢復(fù)時(shí)間:1.2 us 正向連續(xù)電流:2 A 最大浪涌電流:35 A 反向電流 IR:5 uA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-221AC 封裝:Reel
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