Appearance: Used,one label is ungluedFunctionality: WorkingDescription:============As pictured, a HeathKitComputer Learning System ET-3400. Powers on, passes self-diagnostics, andaccepts keypad entry. Manual is available at: https://ia700407.us.archive.org/22/items/HeathkitManualForTheEt-3400MicroprocessorTrainer/et3400_text.pdf. About Us:=========The ComputerPreservation Group is dedicated to the preservation of historical computers. Tohelp fund ongoing operations, select items are made available. To learn more,please visit our website: www.computerpreservation.com. Thank you for your support!Warranty andReturns:=====================We understand thatthere may be compatibility issues, space constraints, or it just doesn’t lookperfect. This item can be returned within 14-days for ANY reason. However,shipping to and from is not refundable. Shipping:=========- Local pickup isalso available at no cost.- Most orders placedbefore 9am will ship the same day.Stock#:1327The ET-3400Microcomputer Learning System is apractical, low costmicroprocessor trainer; designedas a learning toolto teach microprocessor operation,programming, andapplications. The ET-3400 Traineris designed toaccompany the EE-3401 IndividualLearning Program onmicroprocessors. All of theprogramming andhardware interface experimentssupplied with thiscourse are implemented on theTrainer. While theTrainer was designed primarily toaccompany thiscourse, it is a flexible, general purposetraining unit andmicroprocessor breadboard.It can be used inmany other applications thatrequire a low costmicroprocessor-based software developmentsystem or as adesign aid for developingspecial interfaces.MAIN FEATURES• Uses the popular6800 Microprocessor.• Is supplied with 256 bytes of semiconductorRAM (expandable to512 bytes).• Features IK ROMmonitor program.• Has hexadecimalkeyboard for rapid dataand program entry.• Has six digits ofhexadecimal display forreading out memoryaddresses, their contents,and registercontents.• Uses breadboardingsockets that permitrapid, solderlessassembly of IC logic circuitryto be used with themicroprocessor.They are ideal forprototyping special interfacecircuits.• The microprocessoraddress bus, data bus,control lines, andassociated signals are bufferedand terminated onfront panel connectors;allowing completefreedom in experimentingwith themicroprocessor and its associatedcircuitry.• Has eightindividual, independent, binaryLED indicators formonitoring logic states inthe breadboardcircuitry.• Has eightindividual, independent, binarydata switches thatcan be used for supplyingbinary words andlogic levels in the breadboardingcircuitry.• The built-in powersupplies furnish powerto all internalcircuitry and have sufficientreserve to powerbreadboard circuits. The-1-5 and ±12-voltsupply voltages are connectedto front panelconnectors.• Has provision forfuture expansion of memoryand I/Ocapabilities.3c0,RcmdId ViewItemDescV4,RlogId p4%60bo7%60jtb9%3Feog4d71f%2B%3E3c0-14e9651a931-0x10b-->
