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GREENWOOD / BLACK WALL STREET WILMINGTON 1898 LITTLE ROCK NINE TUSKEGEE STUDY ROSEWOOD 1923 THE TUSKEGEE AIRMEN SENECA VILLAGE BLACK TOWNS GREENWOOD / BLACK WALL STREET WILMINGTON 1898 LITTLE ROCK NINE TUSKEGEE STUDY ROSEWOOD 1923 THE TUSKEGEE AIRMEN SENECA VILLAGE BLACK TOWNS
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MY'STORY

The MOVE Fire

This is a personal recollection on the Move fire on May 13, 1985 Philadelphia police fired thousands of rounds at the MOVE house, city officials approved dropping an explosive device on the roof, the resulting fire was allowed to burn, 11 people—including five children—died, and 61 homes were destroyed. Philadelphia City Council later called it a “brutal attack carried out by the City of Philadelphia on its own citizens” and acknowledged that no individual faced criminal consequences for the bombing. One timeline correction worth preserving for the BHP record: the major previous MOVE-police confrontation was August 8, 1978, about seven years before the bombing, not a year or two earlier. Officer James Ramp was killed, other police and firefighters were wounded, nine MOVE members were later convicted, and television cameras recorded police beating Delbert Africa during his arrest. The 1985 MOVE Commission later specifically criticized city planners for failing to adequately use lessons from that 1978 confrontation. And that actually strengthens the point you’re making: 1985 did not happen without precedent or institutional memory. There had already been a deadly confrontation with MOVE, years of conflict, negotiations and police involvement before Osage Avenue.

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BLACK FACTS
The Truths They Never Taught You...

Katherine Johnson — Mathematics to the Moon

Katherine Johnson’s mathematical calculations helped guide some of America’s most important early space missions while she confronted the racial and gender barriers faced by Black women in twentieth-century America.

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Wikipedia

CADSTAR

CADSTAR
DeveloperZuken
Release1987; 39 years ago (1987)
Stable release
2018 / 1 April 2018; 8 years ago (2018-04-01)
Operating systemWindows, MS-DOS (early versions)
Platformx86-64, x86
Available inEnglish
TypeECAD/EDA, CAM
LicensePerpetual
Websitezuken.com/CADSTAR

CADSTAR is a Windows-based electronic design automation (EDA) software tool for designing and creating schematic diagrams and printed circuit boards (PCBs). It provides engineers with a tool for designing simple or complex, multilayer PCBs. CADSTAR spans schematic capture, variant management, placement, automatic and high-speed routing, signal integrity, power integrity, EMC analysis, design rule checks and production of manufacturing data.

Originally developed by British PCB vendor Racal-Redac, CADSTAR has been part of the Zuken product portfolio since its acquisition in 1994.[1][2] The software is developed at Zuken's Technology Centre (ZTC) in Bristol.[2]

The basic features of CADSTAR can be tested with the free version of CADSTAR Express.[3] Schematic and PCB files produced by CADSTAR can be reviewed using the free CADSTAR Design Viewer.

History

[edit]

The first version of CADSTAR was released in late 1987 for MS-DOS.[4][5] CADSTAR for Windows was released in 1994.[6] Since then, there has been about one major release per year. Zuken subsequently released eCADSTAR in 2019.[7]

Features

[edit]

CADSTAR contains modules for specific uses:

  • Design Editor – This enables the engineer to draw schematic circuits, define the PCB layout and produce the manufacturing data from the completed PCB.
  • Library Editor – Used for the creation of Symbols, Component and Parts. Supports ODBC compliant databases.
  • Embedded Router – Used to create the tracks (layout) and other copper features of the board within the Design Editor environment.
  • P.R.Editor – Used to create the tracks and other copper features of the board in an external environment to the Design Editor with many more features than the Embedded Router.
  • High-Speed P.R.Editor – Allows the user to define a wide range of circuit rules and routing constraints to control the layout process.
  • Signal Integrity Verify – Post-layout signal integrity simulation toolset and what-if analysis.
  • Power Integrity – Fast analysis methodology including what-if analysis for concurrent power integrity.
  • EMC Adviser – Helps designers predict, analyse and control EMC design issues.
  • Design Migration Tool – Used to migrate designs and libraries from other EDA-tools into CADSTAR.
  • Variant Manager – Allows support of variant assemblies for different part values or not fitted components on the same PCB.

See also

[edit]

References

[edit]
  1. ^ Steffora, Ann (29 June 1998). "PCB World To IC Designs". Electronic News. Vol. 44, no. 2225. Sage Publications. p. 33 – via Gale.
  2. ^ a b Staff writer (5 April 2000). "Zuken demonstrates latest Cadstar tool". Electronics Weekly. Metropolis International Group. p. 20 – via Gale.
  3. ^ Staff writer (January 2002). "Zuken offers free CADSTAR". Printed Circuit Design. Vol. 19, no. 1. UBM LLC. p. 6 – via Gale.
  4. ^ Grey, Mike (March 1991). "Joining the Board". CadCam. Vol. 10, no. 3. EMAP Media. pp. 31 et seq. – via Gale.
  5. ^ Staff writer (7 January 1988). "Complex printed circuit boards with surface mounted parts on each side can be designed on a PC". Electronic Design. Vol. 36, no. 1. Endeavor Business Media. p. 166 – via Google Books.
  6. ^ Maliniak, Lisa (1 April 1996). "A Guide to PCB Layout Tools for Windows". Electronic Design. Vol. 44, no. 7. Endeavor Business Media. pp. 65 et seq. – via Gale.
  7. ^ Tyler, Neil (19 December 2019). "Zuken unveils high-speed features for Internet-connected PCB design". New Electronics. Mark Allen Group. Archived from the original on 24 May 2025.
[edit]
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Wikipedia

CADSTAR

CADSTAR is a Windows-based electronic design automation (EDA) software tool for designing and creating schematic diagrams and printed circuit boards (PCBs). It provides engineers with a tool for designing simple or complex, multilayer PCBs. CADSTAR spans schematic capture, variant management, placement, automatic and high-speed routing, signal integrity, power integrity, EMC analysis, design rule checks and production of manufacturing data. Originally developed by British PCB vendor Racal-Redac, CADSTAR has been part of the Zuken product portfolio since its acquisition in 1994. The software is developed at Zuken's Technology Centre (ZTC) in Bristol. The basic features of CADSTAR can be tested with the free version of CADSTAR Express. Schematic and PCB files produced by CADSTAR can be reviewed using the free CADSTAR Design Viewer.

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Wikipedia

Environment variable

An environment variable is a user-definable value that can affect the way running processes will behave on a computer. Environment variables are part of the environment in which a process runs. For example, a running process can query the value of the TEMP environment variable to discover a suitable location to store temporary files, or the HOME or USERPROFILE variable to find the directory structure owned by the user running the process. They were introduced in their modern form in 1979 with Version 7 Unix, so are included in all Unix operating system flavors and variants from that point onward including Linux and macOS. From PC DOS 2.0 in 1982, all succeeding Microsoft operating systems, including Microsoft Windows, and OS/2 also have included them as a feature, although with somewhat different syntax, usage and standard variable names.

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Wikipedia

List of CAx companies

This is a list of notable computer-aided technologies (CAx) companies, for which Wikipedia articles exist, and their software products. Software that supports CAx technologies has been produced since the 1970s, for a variety of computer platforms. CAx applications incliude computer-aided design (CAD), computer-aided engineering (CAE), and computer-aided manufacturing (CAM). In addition, industrial-range CAx applications are supported by dedicated product data management (PDM), enterprise resource planning (ERP), and other software layers. General-purpose PDM and ERP software is not listed here.

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Wikipedia

List of EDA companies

A list of notable electronic design automation (EDA) companies.

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TOPIC OF THE DAY

Greenwood / Black Wall Street

Before the 1921 destruction of Tulsa’s Greenwood District, Black residents had created a remarkable center of business and community life. The district included stores, professional offices, entertainment venues and homes owned by Black citizens. Understanding Greenwood means learning what was built—not only what was burned.

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TRIVIA QUESTION OF THE DAY

What prosperous Tulsa district became widely known as “Black Wall Street”?

The Greenwood District.