Metrologic IS1000 Series Guia do Utilizador Página 158
- Página / 198
- Índice
- MARCADORES
Avaliado. / 5. Com base em avaliações de clientes
152
CipherLab BASIC Compiler
User's Guide
Syntax
UPDATE_TRANSACTION_EX(file%, N%, data$)
Remarks
"file%" is an integer variable in the range of 1 to 6, indicating which transaction file
to access. The command UPDATE_TRANSACTION_EX(1, N%, data$) works the
same as the command UPDATE_TRANSACTION(N%, data$).
"N%" is an integer variable, indicating the ordinal number of the transaction record
to be updated.
"data$" is a string variable, representing the character string to replace the old data.
Example
...
UpdateTransaction_1:
UPDATE_TRANSACTION_EX(1, Num%, NewData$)
RETURN
...
See Also
GET_TRANSACTION_DATA_EX$, SAVE_TRANSACTION_EX,
UPDATE_TRANSACTION
5.20.2 DBF Files and IDX Files
This one is an index sequential file structure. Table look-up and report generation is easily
supported by using index sequential file routines. There are actually two types of files
associated with this file structure, namely, DBF files and IDX files.
A DBF file has a fixed record length structure. This is the file that stores the data records
(members), whereas, the associated IDX files are the files that keep the information of the
position of each record stored in the DBF file. Yet, such index files are re-arranged (sorted)
according to some specific key values. In addition to the IDX files that are explicitly created
by the user, the BASIC run-time maintains a default IDX file which keeps the original data
sequence.
A library would be a good example to illustrate how DBF and IDX files work. When you
are trying to find a specific book in a library, you always start from the index. The book can
be found by looking into the index categories of book title, writer, publisher, ISBN number,
etc. All these index entries are sorted in ascending order for easy lookup according to some
specific information of books (book title, writer, publisher, ISBN number, etc.) When the
book is found in the index, it will tell you where the book is actually stored.
As you can see, the books kept in the library are analogous to the data records stored in the
DBF file, and, the various index entries are just its associate IDX files. Some information
(book title, writer, publisher, ISBN number, etc.) in the data records is used to create the
IDX files.
For portable terminals, a BASIC program can have up to 5 DBF files. Each DBF file can
have up to 3 associated IDX files, and each of them is identified by its key (index) number.
The valid key numbers are from 1 to 3. The length of the record in the DBF file is limited to
255 bytes.
- BASIC Compiler 1
- Copyright Notice 2
- Contents 3
- Introduction 7
- Typographical Conventions 8
- Revision History 8
- Development Environment 9
- 2.2 System Requirements 10
- 2.3 BASIC Run-time Engine 11
- 2.4 Development Flow 11
- Using The BASIC Compiler 14
- 3.2 Edit Menu 15
- 3.3 Configure Menu 17
- 3.4 Compile Menu 18
- 3.5 Help Menu 19
- Basics of the BASIC Language 21
- 4.2 Variables 22
- 4.3 Expression and Operators 23
- 4.3.2 Arithmetic Operator 24
- 4.3.3 Relational Operator 24
- 4.3.4 Logical Operator 24
- 4.4 Operator Precedence 25
- 4.5 Labels 25
- 4.6 Subroutines 26
- 4.7 Programming Style 27
- BASIC Commands 28
- In This Chapter 29
- 5.1 General Commands 30
- 5.2 Commands for Decision 33
- Structures 33
- 5.4.1 Combining Strings 38
- 5.4.2 Comparing Strings 38
- 5.4.4 Searching for Strings 39
- 5.4.6 Converting for Strings 43
- 5.5.1 Event Triggers 47
- 5.5.2 Lock and Unlock 56
- 5.6 System Commands 58
- 5.7 Barcode Reader Commands 64
- 5.9 Keyboard Wedge Commands 73
- 5.9.2 KBD / Terminal Type 74
- 5.9.5 Alphabets Case 75
- 5.9.6 Digits Position 76
- 5.9.8 Digit Transmission 76
- 5.9.9 Inter-Character Delay 76
- 5.10 Buzzer Commands 80
- 5.13 LED Command 84
- 5.14 Keypad Commands 85
- 5.15 LCD Commands 89
- 5.16 Battery Commands 100
- 5.17 Communication Ports 102
- 5.18 RF Communications 109
- IDs and Groups 111
- 433 MHz RF System 111
- 2.4 GHz RF System 111
- RF Practice 117
- 5.18.4 RF Base Properties 118
- 5.19 Wireless Communications 125
- Net Status 129
- 5.19.3 IEEE 802.11b 131
- TCP/IP Networking 132
- TCP/IP Practice 139
- 5.19.4 Bluetooth 142
- Frequent Device List 145
- Example code (2): 147
- Bluetooth Practice 148
- PAN Application 149
- Keyboard Emulator 149
- 5.20 File Manipulation 151
- 5.20.1 DAT Files 152
- 5.20.3 Error Code 165
- 5.21 Memory 166
- 5.22 Debugging Commands 168
- 5.23 Reserved Host Commands 171
- Barcode Setting 175
- Symbology Parameters 176
- Codabar 177
- EAN13 & UPCA 178
- Plessey 178
- Telepen 179
- RSS14 Limited 179
- Scanner Parameters 180
- Read Redundancy 181
- Time-Out 182
- Negative Barcode 182
- Run-Time Error Table 183
- Debugging Messages 185
Manuais e produtos relacionados com Leitores de códigos de barras Metrologic IS1000 Series
(52 páginas)
(36 páginas)© 2020, manymanuals-pt.com. Todos os direitos reservados. | 0.052 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentários a estes Manuais