point-of-sale

问题 I would like to implement an distributed Point-Of-Sale system, somewhat like the one described in Point of sale app architecture advice. It is a distributed system with these charachteristics: The clients are mission critical , they should work even if the network connection or the server fails, but just for a few days or so. The clients must be easy to install. Each client has it's own local embedded database. The communication between the clients and the server is using a message queue. The

问题 I'm trying interpret the Automatic Status Back (ASB) data from Epson POS printer. I've successfully made contact with the printer using some example code from the UB-E20 Technical Reference Guide (www.amigopos.com/faq/faq_262.aspx). Unfortunately, the manual only states where I can expect the 4 bytes of ASB data in the return string from my query. It does not explain what each bits represents in those 4 bytes. I can see that the return values change when I open the cover of the printer and/or

问题 I was asked by my client to print receipts on an Epson TM U220 (http://pos.epson.com/products/TM-U220.htm) from my web application. I have no idea how to do that. Are there any java applets or something else that I can use for printing? Should i use JasperReports? (Does JasperReports help to cope with this problem?) If there are flash apps that could be used, I have no objection to using that. I am using Grails for my web apps. 回答1: You don't need an applet, from a grails controller you may

问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed last year . I'm having to design & develop UI for a Point of Sale (POS) system. There are obvious features that need to be included, like product selection & quantity, payment method, tender amount, user login (as many users will use one terminal), etc. My question is related more towards

问题 Has anyone used Epson OPOS ADK for .NET for Windows 7. I tried to install Windows Vista drivers on Windows 7 since there are none available for Windows 7, but it did not work. Please share any suggestions or ideas that might have worked for you. I am using a TM-88IV receipt printer. 回答1: It might be easier to use a generic text printer driver. Some of those specific OPOS drivers hog up CPU resource (either they are buggy or badly written). By using a generic text printer driver, you can send

问题 My client has bought a new Cash Drawer for his POS system. Features fo the cash drawer as follows: Model: D41SRB SKU: D41SRB Electronic Cash Drawer Black 16", Roller, 24V Epson STD RJ11, Stainless front 5 Bill/5 Coin 1mm steel case Two extra brackets inside top of case for added durability` Its connected to the reciept printer EPSON TM-T88V Receipt . I need to open this drawer from a click of button in my C# application, however when I set the drawer to open after print from Printer

问题 I want to use makefile to create my app and .out file and use it in my verifone vx520. I have makeapp.bat for creating .out file but when I run it get this error: NMAKE : fatal error U1073: don't know how to make 'utils.h' and this is makeapp.bat file: @goto Begin :Begin @set OLDPATH=%PATH% @rem set VRXSDKS to the Verix V SDK directory @set VRXSDK=C:\eVoAps\SDK\1.2.0\VRXSDK @rem Set RVCTDIR to RVDS2.2 @set RVCTDIR=C:\Program Files\ARM\RVCT\Programs\2.2\349\win_32-pentium @rem or, Set RVCTDIR

问题 Im working with a CD722UN Customer Display for our POS application. it comes with a USB2.0 connection and a installation package containing a driver ect.. now, for my application. how should i do when i want to access this driver? at the moment i'm using the "CD722UN application"s .dll path but that can warry from clients OS ect.. Declare Function opencd722usb Lib "C:\Program\cd7220 USB\cd722dusb.dll" () As Boolean Declare Function writecd722usb Lib "C:\Program\cd7220 USB\cd722dusb.dll"

问题 I was wondering how I can create and start an intent using this: "qsrtech.posprintdriver/.printservice" I downloaded the POS Printer Driver (ESC) app (which is the app I am trying to access). I tried this: String PrintPage = "qsrtech.posprintdriver/.printservice"; Intent intent = new Intent(Intent.ACTION_MAIN); intent.setComponent(ComponentName.unflattenFromString(PrintPage)); intent.addCategory(Intent.CATEGORY_LAUNCHER ); startActivity(intent); However, I get an error saying: "No activity

问题 Can anyone help me with creating a dropdown list in the POS partner screen. I added this in the pos.xml file, but the dropdown is empty. Thanks <div class='client-detail'> <span class='label'>CustomerGroup</span> <select class='*what to place here?*' name='group_id'> <option value=''>None</option> <t t-foreach='*what to place here?*' t-as='group'> <option t-att-value='group.id' t-att-selected="partner_group_id ? ((group.id === partner.group_id[0]) ? true : undefined) : undefined"> <t t-esc=