Yes. You can use Dia for drawing technical diagram in Ubuntu. Dia provides many objects that you can use to draw technical diagram. The objects such as:
AADL : Process; Thread; Data; Processor; Memory; Bus; System; Subprogram; Thread Group; Device; Package.
Assorted : Right angle triangle; Isoceles triangle; Perfect square, height equals width; Perfect circle; Quarter circle; Diamond; Pentagon. Five sided shape; Hexagon. Six sided shape; Heptagon. Seven sided shape; Octogon. Eight sided shape; Horizontal parallelogram; Vertical parallelogram; Trapezoid; Four point star; curved four point star; Five point star; Six point star; Seven point star; Eight point star; Sharp eight point star; Curved eight point star; Swiss cross; Maltese cross; Down arrow; Up arrow; Left arrow; Right arrow; Notched left arrow; Notched right arrow; Left-up arrow; Turn-up arrow; Left-right arrow; Up-down arrrow; Quad arrow; Left-right-up arrow; Up-down-left arrow; Pentagon Pentagon block arrow; Chevron; Heart, Sun, Quarter moon.
BPMN : Ad-Hoc Collapsed Sub-Process; Compensation Collapsed Sub-Process; Group; Transaction; Data Object; Text Annotation.
ChemEng : Positive Displacement Rotary Pump or Compressor; Reciprocating Compressor or Pump; Axial Flow Fan; Compressor or Turbine; Ejector or Injector; AC Generator; Valve; Valve – vertical; Regulable Valve; Regulable Valve – vertical; Basic Filter; Mixer; Cyclone and hydrocyclone; Spray Drier; Centrifuge.
Chronogram : Time scale; Data line.
Circuit : Vertically aligned resistor; Horizontally aligned inductor, Vertically aligned inductor; Horizontally aligned resistor; Vertically aligned resistor (European); Horizontally aligned inductor (European); Vertically aligned inductor (European); Horizontally aligned resistor (European); Horrizontally aligned capacitor; Vertically aligned capacitor; NPN bipolar transistor; PNP bipolar transistor.
Cisco – Computer : PC; Macintosh; Terminal; SUN workstation; CiscoWorks workstation; PC Router Card; PC Software; PC with Router-Based Software; Workgroup director; CiscoSecurity; Cisco CA; WWW server; Web browser; File Server; Software-Based Router on File Server; Server with PC Router; IBM Tower; IBM Mini (AS400); Front End Processor; IBM mainframe; IBM mainframe with FEP; HP Mini; Suupercomputer; Web cluster; Mini VAX; PC Card; Scanner; Tablet; EtherClient; Handheld; Wireless; PDA; Newton, Laptop, Printer, Monitor, PC Video, Modem, BBS, MicroWebServer, Relational Database, Diskette, Host, Tape array, Disk subsystem, JBOD, Storage array, FC Storage, PC Adapter Card.
Cisco – Misc : Government Building, University, Small Business, Home Office, Branch Office, Branch Office Subdued, Branch office blue, Generic Building, Generic Building subdued, Generic Building blue, Medium Building, Medium Building subdued, Medium Building blue, House, House blue, Telecommuter house, Telecommuter house subdued, MDU, Man, Man red, Man gold, Man blue, Standing Man, Woman, Woman red, Woman gold, Woman blue, Running man, Running man subdued, Telecommuter, Running Woman, CiscoWorks Man, PC Man left, PC Man, Sitting Woman, Sitting Woman right, Mac Woman, Androgynous Person, Lock, Key, Lock and Key, Satellite dish, Satellite, Antenna, File cabinet, Car, Truck, Video Camera, Video Camera right, Microphone, Headphones, Speaker.
Cisco – Network : Network Management, Detector, Protocol Translator, IP, IP Old-style, NAT, VIP, Terminal Server, Access Server, System Controller, Directory Server, Firewall, Firewall subdued, Firewall horizontal, Firewall Service Module, IOS Firewall, PIX Firewall, PIX Firewall Left, Centri Firewall, Guard, Security appliance, VPN concentrator, VPN Gateway, LAN to LAN, SSL Terminator, IP DSL Switch, DSLAM, Cable Modem, Wireless Connectivity, Wireless Transport, AccessPoint, Wireless Bridge, Dual Mode AccessPoint, Wi-Fi Tag, Wireless Location Appliance, Location server, Lightweight AP, WLAN controller, BBFW, BBFW media, Channelized Pipe, Concatenated Payload, Optical Cross-Connect, Optical Transport, Optical Fiber, Optical Amplifier, Digital Cross-Connect, IP Transport Concentrator, DWDM Filter, WDM, 15200, 15800, ONS15104, 10700, Metro 1500, ONS15540, Automatic Protection Switching, RPS, UPS, LongReach CPE, 3X74 (floor) cluster controller, 3174 (desktop) cluster controller, CSU/DSU, WAN, Cloud, Cloud Gold, Cloud White, Cloud Dark, Distributed Director, LocalDirector, IOS SLB, MUX, General Appliance, PAD, CDDI/FDDI Concentrator, FDDI Ring, TokenRing, MAU, Repeater, Bridge, Breakout box, STB (set top box), TV, IPTV broadcast server, IPTV content manager, VN2900, VN5902, VN5900, Catalyst Access Gateway, Generic Gateway, TransPath, uBR910 Cable DSU, Storage Solution Engine, Content Engine (Cache Director), CDM Content Distribution Manager, Content Transformation ENgine (CTE), ME 1100, MAS Gateway, File Engine, Service Control.
Cisco – Switch : Router, Router subdued, Router with Silicon Switch, NetFlow router, Broadband router, Wavelength router, Wireless router, 7507 Router, 7505 Router, 7500ARS (7513) Router, Edge Label Switch Riuter with NetFlow, Edge Label Switch Router, Router with Firewall, Optical Services Router, Content Router, Carrier Routing System, Storage Router, NetSonar, Hub, Hub subdued, Cisco Hub, Small Hub, 100BaseT Hub, Workgroup switch, Workgroup switch Subdued, Workgroup Switch Voice-Enabled, BBSM, ATM Tag Switch Router, Switch Processor, Route Switch Processor, Route Switch with Si, PXF, ASIC Processor, Generic Processor, Data Center Switch, Data Center Switch Reversed, Data Switch Processor, Content Switch, Content Service Module, CSM-S, Access Gateway, ATM Switch, ATM 3800, Cisco 1000, ISDN switch, Label Switch Router, MultiSwitch Device, LAN2LAN Switch, Multilayer Switch, Multilayer Switch with Silicon, Multilayer Switch with Silicon subdued, Programmable Switch, Content Service Switch 1100, ATM Fast Gigabit Etherswitch, RateMUX, Workgroup 5500, Workgroup 5000, Workgroup 5002, NetRanger, MGX 8220, MGX 8240, MGX 8260, Universal Gateway, iSCSI switch, Workgroup Fibre Channel intelligent switch, Director-class Fibre Channel intelligent switch, Multi-Fabric Server Switch, Server Switch, Multilayer Remote Switch, Layer 2 Remote Switch, Virtual Layer Switch.
Cisco – Telophony : Phone, Phone 2, Phone Ethernet, Phone Appliance, Phone Feature, Phone/Fax, HootPhone, IP Phone, IP Softphone, Softphone, Cellular Phone, Mobile Access IP Phone, Pager, Fax, Turret, Octel, Radio Tower, PBX, PBX Xwitch, Class 4/5 switch, SONET MUX, ADM, ITP, ATA, SIP Proxy Server, MGX 8000 Series Voice Gateway, End Office, Voice-Enabled Access Server, Voice-Enabled Router, Voice-Enabled ATM Switch, CallManager, IP Telephony Router, Mobile Access Router, H.323, STP, BTS 10200, Generic Softswitch, SC2200/VSC3000 host, Virtual switch controller (VSC 3000), SC2200 (Signalling Controller), MoH server (Music on Hold), TDM router, 6701, 6705, 6732, IAD router, ICS, ICM, IntelliSwitch Stack, Unity server, Unity Express, MCU, uMG series.
Civil : Vertical rest, Horizontal rest, Bivalent vertical rest, Reference line, Water level, Soil, Horizontally aligned arrow, Vertically aligned arrow, Horizontal limiting line, Vertical limiting line, Horizontally aligned pump, Vertically aligned pump, Horizontally aligned compressor, Vertically aligned compressor, Vertically aligned valve, Horizontally aligned valve, Backflow preventer, Motor, Gas bottle, Frequency converter, Vertically aligned propeller, Aerator with bubbles, Rotor, Final-settling basin, Preliminary clarification tank, Basin, Container.
Cybernatics : Sensor – left; Sensor – right; Sensor – bottom; Sensor – top; Sum, subtracting left input; Sum, subtracting right input; Sum, subtracting bottom input; Sum, subtracting top input; Integrator – input left; Integrator – input right; Integrator – input bottom; Integrator – input top; Sum; Product; High pass filter; Low pass filter; Sine characteristic or input; Sigmoid characteristic; Saturation characteristic; Relay characteristic (sigma); Half wave rectifier or ramp input; Full wave rectifier (absolute value); Constant positive shift on the y-axis; Constant negative shift on the y-axis; Constant factor greater 1; Constant factor betwwen 0 and 1; Constant factor between 0 and -1; Constant factor below -1; Template for custom charecteristics; Time delay.
Database : Table, Reference, Attribute compound.
Electric : Normally open contact (horizontal), Normally closed contact (horizontal), Normally open position switch (horizontal); Normally closed position switch (horizontal); Normally open contact (vertical), Normally closed contact (vertical), Normally open position switch (vertical), Normally closed position switch (vertical), The command organ of a relay (horizontal), Relay (horizontal), Lamp or indicator light (horizontal), The command organ of a relay (vertical), Relay (vertical), Lamp or indicator light (vertical), Connection point.
ER : Entity, Weak entity, Relationship, Attribute, Participation.
Flowchart : Process/Auxiliary Operation, Input/Output, Decision, Connector, Display, Transaction file, Off page connector, Document, Manual operation, Preparation, Manual input, Predefined process, Terminal Interrupt, Magnetic disk, Magnetic drum, Magnetic tape, Internal storage, Merge, Extract, Delay, Summing junction, Collate, Sort, Or, Punched card, Punched tape, Transmittal tape, Offline storage, Data source.
FS : Flow, Orthogonal polyline flow, Function.
Gane and Sarson : Alternate external entity, Data store, External entity, Process.
GRAFCET : Regular step, Initial step, Macro entry step, Macro exit step, Macro call step, Macro sub-program call step, Action to associate to a step, Condition (of an action), Transition, OR vergent, AND vergent, Arc (upward).
Jigsaw : Jigsaw – part_oioi, Jigsaw – part_ioio, Jigsaw – part_iiii, Jigsaw – part_oooo, Jigsaw – part_oooi, Jigsaw – part_iooo, Jigsaw – part_oioo, Jigsaw – part_ooio, Jigsaw – part_iioo, Jigsaw – part_oiio, Jigsaw – part_ooii, Jigsaw – part_iooi, Jigsaw – part_oiii, Jigsaw – part_ioii, Jigsaw – part_iioi, Jigsaw – part_iiio.
Ladder : ‘if’ (normally open) ladder contact, ‘if not’ (normally closed) ladder contact, Simple output variable, Negative output variable, ‘set’ output variable, ‘reset’ output variable, ‘jump’ output variable, Receptivity output variable, Power-saved simple output variable, Power-saved negative output variable, Power-saved ‘set’ output variable, Power-saved ‘reset’ output variable.
Lights : PAR, PAR on the floor, ACL, Pebble Convex lantern, Fresel lantern, Striplight, Ellipsoidal Reflector Spotlight, Blinders, Stroboscope light, Moving head, Scanner, Structure.
Logic : OR gate, AND gate, XOR gate, Simple buffer, Inverter, NAND gate, NOR gate, NOT, Crossconnector.
Map, Isometric : Road Section; Long Straight Road Section; Crossroads; T-Junction; Elevated Road; Corner 1; Corner 2; River; Roof1; Block 1, 2:4; Block 2, 2:8; Block 3, 4:4; Block 4, 4:8; Block 5, 3:3; Block 6, 4:6; Block 7, Factory, Car 1, Front View; Car 2, Rear View; Train 1, angled downward; Train 2, angled upward; Tree 1; Footbridge, Pedestrian Bridge; One Way Road Sign.
Misc : Tree, Folder, File, expensible node, expended node, Traditional clock, Measure distance, Resizable grid.
MSE : Node center, Large extension node, Small extension node, Tactical satellite communications terminal, Multiplexer, Demultiplexer.
Network : Computer, Monitor, Storage, Ethernet bus, Simple printer, WAN connection, WAN link, Stackable hub or switch, Modular switching system, 24 Port Patch Panel, RJ45 wall-plug, Wall-plug for the scEAD cabling system, simple modem, Antenna for wireless transmission, Mobile telephony base station, Network cloud, Mobile telephony cell, Router symbol, Switch symbol, ATM switch symbol, Firewall router, Worstation monitor, UNIX workstation, Desktop PC, Bigtower PC, Miditower PC, Minitower PC, Speaker with integrated amplifier, Speaker without amplifier, 3 1/2 inch diskette, ZIP disk, External DAT drive, Mobile phone, Telephone, Plotter, Digitizing board.
Pneumatic/Hydraulic : Double-effect jack, Normally-in simple-effect jack, Normally-out simple-effect jack, Generic pressure source, Hydraulic pressure source, Pneumatic pressure source, Air exhaust orifice, 2/2 distributor, 3/2 distributor, 4/2 distributor, 5/2 distributor, Muscular command, Push-button command, Mechanical command by tappet, Mechanical command by spring, Electric command (single coil), Electric command (double coil), Indirect command by hydraulic driver, Indirect command by pneumatic driver, Connection point.
RE-i* : An i* softgoal, An i* goal, An i* resource, An i* task, An i* unspecified actor, An i* agent, An i* position, An i* role, An i* unspecified link, An i* positive contribution, An i* negative contribution, An i* dependency link, An i* decomposition link, An i* means-ends link.
RE-Jackson : A Jackson given domain, A Jackson designed domain, A Jackson machine domain, A Jackson requirement, A Jackson shared phenomenon, A Jackson requirement phenomenon.
RE-KAOS : A KAOS softgoal, A KAOS goal, A KAOS requirement, A KAOS assumption, A KAOS obstacle, A KAOS AND refinement, A KAOS complete AND refinement, A KAOS OR refinement, A KAOS complete OR refinement, A KAOS operationalization, A KAOS contribution, A KAOS obstruction, A KAOS binary conflict, A KAOS agent, A KAOS responsibility, A KAOS monitor link, A KAOS control link, A KAOS capable-of, A KAOS performs, A KAOS input, A KAOS output.
SADT/IDEFO : Activity/data flow arrow, Activity/data box, Flow label.
SDL : Block type reference, Service type reference, Process type reference, State, Function header, Send message, Receive message, Function call, Macro call, Action being executed, Save state, Decision, In/Out connector, Stop, Procedure return, Comment, Geberic text note.
Sybase : Sybase dataserver, Sybase replication server, Log transfer manager or rep agent, Stable storage device, Sybase client application, Replication server manager.
UML : Class; Template class; Note; Dependency; Realizes, implements a specific interface, Generalization, class inheritance, Association, two classes are associated; Aggregation, one class is part of another; Implements, class implements a specific interface; Constraint, place a constraint on something; Small package; Large package; Actor; Use case; Lifeline; Object; Message; Component; Facet; Receptacle; Event Source; Event Sink; Node; Class stereotype; Initial/end state; State; Activity; Branch; Fork/union; Transition.
Beside the objects below, Dia also provides standard objects such as:
Modify object, Text edit, Magnify, Scroll around the diagram, Text, Box, Ellipse, Polygon, Beziergon, Line, Arc, Zigzagline, Polyline, Bezierline, Image, Outline.
By using Dia, you also can export your technical diagram to:
Cairo PNG (png); Cairo PNG (with alpha) (png); Cairo Portable Document Format (pdf); Cairo PostScript (ps); Cairo Scalable Vector Graphics (svg); Computer Graphics Metafile (cgm); Dia Diagram File (dia); Dia Shape File (shape); Drawing Interchange File (dxf); Encapsulated Postscript (using Pango fonts) (eps); Encapsulated Postscript (using PostScript Latin-1 fonts) (eps); HP Graphics Language (plt, hpgl); Imagemap (cmap); LaTex PGF macros (tex); Pixbuf[bmp] (bmp); Pixbuf[ico] (ico, cur); Pixbuf[jpeg] (jpeg, jpe, jpg); Pixbuf[png] (png); Pixbuf[tiff] (tiff, tif); PNG (anti-aliased) (png); PyDia Code Generation (C++) (cxx); PyDia Code Generation (Java) (java); PyDia Code generation (Pascal) (pas); PyDia Code Generation (python) (py); PyDia DOT Export (svg); SVG compressed (svgz); SVG plain (svg); TeX Metapost macros (mp); TeX PSTricks macros (tex); Viso XML format (vdx); XFig format (fig); XSL Transformation filter (code).
You can download Dia from: http://live.gnome.org/Dia
