i'm going to try to decap this incredible early (1973) 555 timer from Signetics.
January 18, 2025 at 12:06 AM
i'm going to try to decap this incredible early (1973) 555 timer from Signetics.
Signetics 2513N/CM4800 Character Generator IC (1970-?)
Katakana bit pattern specimen sheet
Katakana bit pattern specimen sheet
December 27, 2025 at 8:51 PM
Signetics 2513N/CM4800 Character Generator IC (1970-?)
Katakana bit pattern specimen sheet
Katakana bit pattern specimen sheet
going to try to crack open this very early (~1973) 555 timer chip from Signetics
December 9, 2024 at 2:47 AM
going to try to crack open this very early (~1973) 555 timer chip from Signetics
New: Signetics CRT font family, based on the bitmap letterforms of the Signetics 2513 character generator, as seen on an analog CRT screen. Mixed-case, style variants and TTF variable axis included.
www.fogcitytype.com/signetics-crt
www.fogcitytype.com/signetics-crt
Signetics CRT — Fog City Type
Monospace font family designed with the bitmap letterforms of the Signetics 2513 character ROM, as seen on a cathode ray tube screen. Four styles, boldface versions, and variable TTF.
www.fogcitytype.com
April 30, 2026 at 2:18 AM
New: Signetics CRT font family, based on the bitmap letterforms of the Signetics 2513 character generator, as seen on an analog CRT screen. Mixed-case, style variants and TTF variable axis included.
www.fogcitytype.com/signetics-crt
www.fogcitytype.com/signetics-crt
For every day this month, I'm going to post about a CPU I have in my collection...
Here is a Signetics 2650. An 8bit CPU, initially designed in 1972 but only released in 1975. The design was very closely based on the IBM 1130 minicomputer.
Clocked at 1.25Mhz, 8bit data & 15bit address busses.
...
Here is a Signetics 2650. An 8bit CPU, initially designed in 1972 but only released in 1975. The design was very closely based on the IBM 1130 minicomputer.
Clocked at 1.25Mhz, 8bit data & 15bit address busses.
...
December 1, 2024 at 5:57 PM
For every day this month, I'm going to post about a CPU I have in my collection...
Here is a Signetics 2650. An 8bit CPU, initially designed in 1972 but only released in 1975. The design was very closely based on the IBM 1130 minicomputer.
Clocked at 1.25Mhz, 8bit data & 15bit address busses.
...
Here is a Signetics 2650. An 8bit CPU, initially designed in 1972 but only released in 1975. The design was very closely based on the IBM 1130 minicomputer.
Clocked at 1.25Mhz, 8bit data & 15bit address busses.
...
i've got a whole tube of early signetics 555 timers from 1973! bsky.app/profile/tube...
i'm going to try to decap this incredible early (1973) 555 timer from Signetics.
August 16, 2025 at 2:47 PM
i've got a whole tube of early signetics 555 timers from 1973! bsky.app/profile/tube...
Happy 555 Day!
Interdesign was founded by a designer who was laid off from Signetics in 1970. Hans Camenzind's design of the 555 timer IC, the company became a multimillion-dollar success, creating many impactful technology products. This is Interdesign's story.
emedia.digikey.com/view/8770579...
Interdesign was founded by a designer who was laid off from Signetics in 1970. Hans Camenzind's design of the 555 timer IC, the company became a multimillion-dollar success, creating many impactful technology products. This is Interdesign's story.
emedia.digikey.com/view/8770579...
May 5, 2025 at 5:10 PM
Happy 555 Day!
Interdesign was founded by a designer who was laid off from Signetics in 1970. Hans Camenzind's design of the 555 timer IC, the company became a multimillion-dollar success, creating many impactful technology products. This is Interdesign's story.
emedia.digikey.com/view/8770579...
Interdesign was founded by a designer who was laid off from Signetics in 1970. Hans Camenzind's design of the 555 timer IC, the company became a multimillion-dollar success, creating many impactful technology products. This is Interdesign's story.
emedia.digikey.com/view/8770579...
AMAZING Signetics 25120 Library for STM32 - ALL Epstein files on one STM32
Introducing my absolutely fantastic Signetics 25120 library optimized for STM32. Store more data than you have ever done before.
#stm32 #stm32cubeide #stm32cubemx #vscode #stm32world #currentmakers […]
Introducing my absolutely fantastic Signetics 25120 library optimized for STM32. Store more data than you have ever done before.
#stm32 #stm32cubeide #stm32cubemx #vscode #stm32world #currentmakers […]
Original post on mastodon.social
mastodon.social
April 1, 2026 at 6:27 AM
AMAZING Signetics 25120 Library for STM32 - ALL Epstein files on one STM32
Introducing my absolutely fantastic Signetics 25120 library optimized for STM32. Store more data than you have ever done before.
#stm32 #stm32cubeide #stm32cubemx #vscode #stm32world #currentmakers […]
Introducing my absolutely fantastic Signetics 25120 library optimized for STM32. Store more data than you have ever done before.
#stm32 #stm32cubeide #stm32cubemx #vscode #stm32world #currentmakers […]
based on a discontinued HK console... from the wiki:
"The user was expected to write the programs in Signetics 2650 assembly language on paper, hand assemble each instruction, and then enter the resulting hexadecimal machine code a byte at a time."
epic
"The user was expected to write the programs in Signetics 2650 assembly language on paper, hand assemble each instruction, and then enter the resulting hexadecimal machine code a byte at a time."
epic
September 20, 2026 at 8:12 PM
based on a discontinued HK console... from the wiki:
"The user was expected to write the programs in Signetics 2650 assembly language on paper, hand assemble each instruction, and then enter the resulting hexadecimal machine code a byte at a time."
epic
"The user was expected to write the programs in Signetics 2650 assembly language on paper, hand assemble each instruction, and then enter the resulting hexadecimal machine code a byte at a time."
epic
That's an old Signetics PDIP, they used Novolac epoxy. I don't recall it having fiberglass flakes though.
(I think you may have sanded down an identical chip to decap in 2022...)
(I think you may have sanded down an identical chip to decap in 2022...)
December 9, 2024 at 3:22 AM
That's an old Signetics PDIP, they used Novolac epoxy. I don't recall it having fiberglass flakes though.
(I think you may have sanded down an identical chip to decap in 2022...)
(I think you may have sanded down an identical chip to decap in 2022...)
The PLS100 is a rebadged Signetics 82S100, which is a bipolar field-programmable logic array (FPLA) that was first released in 1975. It was the first commercially successful programmable logic device. The Commodore 64 used the 82S100/PLS100 as the "PLA" chip, eliminating a ton of discreet ICs.
March 3, 2025 at 11:13 PM
The PLS100 is a rebadged Signetics 82S100, which is a bipolar field-programmable logic array (FPLA) that was first released in 1975. It was the first commercially successful programmable logic device. The Commodore 64 used the 82S100/PLS100 as the "PLA" chip, eliminating a ton of discreet ICs.
It’s an in-joke that refers to the configuable multivibrator integrated circuit invented by Signetics corp. in 1972.
en.wikipedia.org/wiki/555_tim...
en.wikipedia.org/wiki/555_tim...
555 timer IC - Wikipedia
en.wikipedia.org
September 2, 2026 at 6:17 PM
It’s an in-joke that refers to the configuable multivibrator integrated circuit invented by Signetics corp. in 1972.
en.wikipedia.org/wiki/555_tim...
en.wikipedia.org/wiki/555_tim...
Making designs is as much 'eye' as just illustrating a certain way.
This #opamp, µA741, was the one that defined so many opamps that came after it. It's so cool looking. And I was doing a series with variations of the Signetics logos (the #maker) I thought this one looked really cool.
This #opamp, µA741, was the one that defined so many opamps that came after it. It's so cool looking. And I was doing a series with variations of the Signetics logos (the #maker) I thought this one looked really cool.
July 24, 2026 at 2:21 PM
A local hero! My single mother's main support for us up until Atari began to crash was working at Signetics who made chips for Atari cartridges.
This is Jerry Lawson. He invented the video game cartridge for the Fairchild Channel F system. Because of his invention, many consoles had cartridges and CD formats and would become the norm.
The Atari 2600, NES, Genesis, and many consoles wouldn't exist without him.
Happy Black History Month.
The Atari 2600, NES, Genesis, and many consoles wouldn't exist without him.
Happy Black History Month.
February 2, 2025 at 12:30 AM
A local hero! My single mother's main support for us up until Atari began to crash was working at Signetics who made chips for Atari cartridges.
Raspberry Pi RP2350B-powered development board stands in for everything bar the CPU in this throwback to 1970s computing.
Chris Burrows Brings the Signetics 2650 Back Into Fashion, Courtesy of an Olimex Pico2-XL
Raspberry Pi RP2350B-powered development board stands in for everything bar the CPU in this throwback to 1970s computing.
www.hackster.io
May 16, 2025 at 4:49 PM
Raspberry Pi RP2350B-powered development board stands in for everything bar the CPU in this throwback to 1970s computing.
Interdesign was founded by a designer who was laid off from Signetics in 1970. With Hans Camenzind's design of the 555 timer IC, the company became a multimillion-dollar success, creating many impactful technology products. This is Interdesign's story.
emedia.digikey.com/view/8770579...
emedia.digikey.com/view/8770579...
December 28, 2025 at 8:10 PM
Interdesign was founded by a designer who was laid off from Signetics in 1970. With Hans Camenzind's design of the 555 timer IC, the company became a multimillion-dollar success, creating many impactful technology products. This is Interdesign's story.
emedia.digikey.com/view/8770579...
emedia.digikey.com/view/8770579...
Sega was able to get a good deal from Signetics on the 68K for the MD too (hence why they're in a lot of early rev MDs) so that helped a lot
July 3, 2026 at 4:50 PM
Sega was able to get a good deal from Signetics on the 68K for the MD too (hence why they're in a lot of early rev MDs) so that helped a lot
Interdesign was founded by a designer laid off from Signetics in 1970. With Hans Camenzind's design of the 555 timer IC, the company became a multimillion-dollar success, creating many impactful technology products. This is Interdesign's story.
https://emedia.digikey.com/view/877057957/31/
https://emedia.digikey.com/view/877057957/31/
December 3, 2024 at 7:37 PM
Interdesign was founded by a designer laid off from Signetics in 1970. With Hans Camenzind's design of the 555 timer IC, the company became a multimillion-dollar success, creating many impactful technology products. This is Interdesign's story.
https://emedia.digikey.com/view/877057957/31/
https://emedia.digikey.com/view/877057957/31/
Awesome. I need to find more in-house publications. I’m looking for signetics stuff.
September 8, 2025 at 5:46 PM
Awesome. I need to find more in-house publications. I’m looking for signetics stuff.
I found an ad for 'Corning Electronics' in 1965. At that time, Corning Glassworks was entering the semiconductor business, and around the same period, they became the largest shareholder in the company 'Signetics.' Neat.
April 19, 2025 at 12:42 PM
I found an ad for 'Corning Electronics' in 1965. At that time, Corning Glassworks was entering the semiconductor business, and around the same period, they became the largest shareholder in the company 'Signetics.' Neat.
