- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄363665 > NSB8 (Electronic Theatre Controls, Inc.) BASIC interpreter for Z80 family PDF資料下載
參數(shù)資料
| 型號： | 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)： | 91/158頁 |
| 文件大?。?/td> | 752K |
| 代理商： | NSB8 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁當(dāng)前第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁第148頁第149頁第150頁第151頁第152頁第153頁第154頁第155頁第156頁第157頁第158頁
ITALIAN TECHNOLOGY
grifo
Page 79
NSB8 Rel. 5.10
(current length = 0).
Immediately after being dimensioned, a string is initialized to contain all blanks. Thus, if A$ is
dimensioned to be 26 characters long, it initially contains a string of 26 blanks.
SUBSTRINGS
The programmer can access parts of a string, smaller segments consisting of one or more consecutive
characters from within the string. Such a segment is called a substring.
Substrings of string variables are represented by substring notation: adding a substring interval, in
parentheses, to the variable name. For example, assume that A$ holds the string value
“ABCDE” (unless otherwise stated, this will be the permanent value of A$ throughout the
discussion). To represent its substring “CD”, you would write A$ (3,4), which specifies a substring
consisting of the 3
rd
through the 4
th
characters of A$. A$ (3,3) would yeld the value of “C”, and A$
(2,5) would represent “BCDE”.
Either or both of the numeric values in a substring interval may be represented by any numeric
expression, as long as each expression evaluates to a value greater than or equal to 1 and less than
or equal to the current number of characters in the string. Whenever any of the numeric values in a
substring interval are non integer, BASIC ignores the fractional parts. Thus, 5.6 is taken as 5, and 1.23
is taken as 1 If A=3 and B=4 then A$ (A,B) would be the same as A$ (3,4), or “CD”. If B is more
than 5, or A is less than 1, A$ (A,B) would not be allowed, causing an OUT OF BOUNDS
ERROR. This error will also occur if the value of the first expression is greater than the value of the
second. Therefore, a backwards substring such as A$ (4,2) is illegal.
THE OPEN ENDED SUBSTRING
A special form of substring notation is used to reference a substring consisting of all the characters
from a given starting position in the string through its end. open ended substring notation uses only
one numeric expression, which specifies the starting position within the string, and which must be
greater than or equal to 1 and less than or equal to the length of the original string. For example, A$(3)
stands for “CDE”. Note that the value of A$ as a whole is the same as the value of the open ended
substring A$(1). A$(5) and A$(5,5) are the same as well, since the 5th character is the last character
in A$. Use of open ended substring notation eliminates the need, in certain situations, to know the
current length of the original string.
STRING CONCATENATION
The concatenation operation may be performed on strings, symbolized by the plus operator (+). This
is not to be confused with numeric addition. Instead, concatenation is the joining of two strings, front
to back, rather like coupling railroad cars tigether. For example, “CAR”+”LOAD” represents the
same value as “CARLOAD”. Any string value may be concatenated with any other string value to
yeld a third value which consists of the two linked together. A$(2,3)+A$(2) yelds the value
“BCBCDE” (remember that A$ has held “ABCDE” throughout this discussion). Concatenation
operations can be chained, such as in
A$(1,1)+A$(3,3)+A$(3,3)+A$(5)+A$(4)+” MEANS YELD”
which gives the value “ACCEDE MEANS YELD”.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| NSB9435T1 | High Current Bias Resistor Transistors(高強(qiáng)度電流偏置電阻晶體管) |
| NSBA114EDXV6T1 | Dual Bias Resistor Transistors(雙偏置電阻晶體管) |
| NSBA114YDXV6T1 | Dual Bias Resistor Transistors(雙偏置電阻晶體管) |
| NSBC143TPDXV6T1 | Dual Bias Resistor Transistors(雙偏置電阻晶體管) |
| NSBC144EPDXV6T1 | Dual Bias Resistor Transistors(雙偏置電阻晶體管) |
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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。