#pdp10

[adafruit]

🎄💾🗓️ Day 11: Retrocomputing Advent Calendar - The SEL 840A🎄💾🗓️

Systems Engineering Laboratories (SEL) introduced the SEL 840A in 1965. This is a deep cut folks, buckle in. It was designed as a high-performance, 24-bit general-purpose digital computer, particularly well-suited for scientific and industrial real-time applications.

Notable for using silicon monolithic integrated circuits and a modular architecture. Supported advanced computation with features like concurrent floating-point arithmetic via an optional Extended Arithmetic Unit (EAU), which allowed independent arithmetic processing in single or double precision. With a core memory cycle time of 1.75 microseconds and a capacity of up to 32,768 directly addressable words, the SEL 840A had impressive computational speed and versatility for its time.

Its instruction set covered arithmetic operations, branching, and program control. The computer had fairly robust I/O capabilities, supporting up to 128 input/output units and optional block transfer control for high-speed data movement. SEL 840A had real-time applications, such as data acquisition, industrial automation, and control systems, with features like multi-level priority interrupts and a real-time clock with millisecond resolution.

Software support included a FORTRAN IV compiler, mnemonic assembler, and a library of scientific subroutines, making it accessible for scientific and engineering use. The operator’s console provided immediate access to registers, control functions, and user interaction! Designed to be maintained, its modular design had serviceability you do often not see today, with swing-out circuit pages and accessible test points.

And here's a personal… personal computer history from Adafruit team member, Dan…

== The first computer I used was an SEL-840A, PDF:

I learned Fortran on it in eight grade, in 1970. It was at Oak Ridge National Laboratory, where my parents worked, and was used to take data from cyclotron experiments and perform calculations. I later patched the Fortran compiler on it to take single-quoted strings, like 'HELLO', in Fortran FORMAT statements, instead of having to use Hollerith counts, like 5HHELLO.

In 1971-1972, in high school, I used a PDP-10 (model KA10) timesharing system, run by BOCES LIRICS on Long Island, NY, while we were there for one year on an exchange.

This is the front panel of the actual computer I used. I worked at the computer center in the summer. I know the fellow in the picture: he was an older high school student at the time.

The first "personal" computers I used were Xerox Alto, Xerox Dorado, Xerox Dandelion (Xerox Star 8010), Apple Lisa, and Apple Mac, and an original IBM PC. Later I used DEC VAXstations.

Dan kinda wins the first computer contest if there was one… Have first computer memories? Post’em up in the comments, or post yours on socialz’ and tag them #firstcomputer #retrocomputing – See you back here tomorrow!

[rlimarjbr]

#Microsoft #founders Paul #Allen, 15 and Bill #Gates, 13 connect to a #PDP10 #computer at the #University of #Washington through a #teletype #terminal at their #Lakeside #School, #Seattle, 1968. #Year1968 #Ano1968 #Anos60 #PaulAllen #BillGates #USA #EUA #Fundadores #Windows ... https://www.instagram.com/p/B4DaNkZHtUB/?igshid=1rhdg91ixcha7

[cinor-i]

Speaker ‘Stun Gun’ Aims To Combat China’s Dancing Grannies

submitted by /u/pdp10 [link] [comments]

from /r/Technology https://ift.tt/3ELL0gV

[leanstooneside]

Rhodesian Ridgeback (ARTEMIS)

• THE PEOPLE

• THE [5398]PDP10

• THE NUL

• THE ERROR

• THE SPACES

• THE SITES

• THE ENTRIES

• THE CONSTITUENTS

• THE GRAFFITO

• THE [5327]CHURCH

• THE MEANING

• THE COMPAQ

• THE SPEAKER'S

• THE POSSIBILITY

• THE PROOF

• THE GAME

• THE MACINTOSH

• THE CODE

• THE LISP

• THE IDEA

• THE SYSOP

• THE FACT

• THE [5194]MULTICS

• THE AMIGA

• THE FIELD

• THE DISK

• THE ARRAY

• THE AMERICAN

• THE DEVICE

• THE PARROT

• THE [5023]FEEP

• THE FINGER

[musif]

#digital KL10? #pdp10 #retrocommunity #oldcomputer #nerd #wired http://ift.tt/2n3rkPs

[kirito-1011]

Ask Leo: Should I Switch to Linux from Windows? submitted by /u/pdp10

[axeman72]

Excel 97 aveva il simulatore. Word aveva il flipper ;)  E comunque, sono BEN PIU’ di 27 anni che gli informatici fanno cose strane “JUST BECAUSE”. 

Casomai fossi molto curioso, “a story about magic”... ed era un PDP10 ;) 

Se andate su amazon.it (o anche .com) e date CTRL-U vi apparirà il codice sorgente della pagina web, in fondo trovare una papera che miagola. Questo su ogni pagina. Credo sia fondamentale che lo sappiate.

[hackernewsrobot]

HAKMEM (1972)

http://www.inwap.com/pdp10/hbaker/hakmem/hakmem.html Comments

[maximuswolf]

Multi-Threading in C/C++: Implications on Software Library Design via /r/programming

Multi-Threading in C/C++: Implications on Software Library Design https://ift.tt/22fxKIQ Submitted August 04, 2020 at 09:33PM by pdp10 via reddit https://ift.tt/3ilhdkf

[sub-media]

DEC PDP10 https://ift.tt/2L7wapn

[richnovel-blog]

자동프로그램 비트코인 재테크

★ 자동프로그램으로 비트코인 모으자 ★ --------- 트레이드 코인클럽 ---------

◆ 저렴한 진입비용 ◆

- 0.06비트코인만으로도 시작할 수 있습니다! - 자동프로그램이 알아서 굴려주기 때문에 - 전문지식,기술 없이 아무나 가능합니다.

◆ 3개의 멤버쉽중 하나만 구매해도 ◆

- 8개월~12개월동안

◆ 프로그램의 자동매매를 통한 시세차익으로 ◆

- 누구나 쉽게! 집에서! - 안전한 수익률을 챙길 수 있는 기회입니다.

◆ 또한 수익은 ◆

- 6년만에 300만원이상 뛰어오른 비트코인으로~ - 이중 제테크가 가능합니다.

◆ 100% 추천인 모집제도 아닙니다. ◆

- 그렇기때문에 인터넷 홍보에 자신없던 분들도 쉽습니다.

◆ 너무나 간단합니다 ! ◆

- 월요일아침 설정 한번만 해주시면 - 금요일까지 수익이 적립되어 - 나홀로 재테크도 가능합니다.

◆ 덤으로 ◆

- 마케팅도 배우면서 그외 5가지 추가 보너스도 - 얻고 싶으신 분들은

저희 CW클럽에서 알고있는 지식들을 전부 O.P.E.N 하고 있으니

★ 5월26일 정식 오픈한 트레이드 코인★

▶ 소개 : http://cafe.naver.com/cwclub112/10

4차산업이 다가올 수록 점점 뜨고 있는 비트코인 재테크 늦지 말고 같이 시작해보세요. ^^

▶ TCC 자동수익 일지 : https://goo.gl/8NuCNQ

▶ CW클럽 카페 살펴보기 : http://cafe.naver.com/cwclub112/

▶ CW클럽 밴드 : http://band.us/n/a1aeUdv6A9Idr

▶ 카톡 문의   : pdp10

[leanstooneside]

Familiarity breeds contempt

the Jargon

The [5398]PDP10

the IBM

the project

the thing

The effort

the Smokey

the PDP

the MIT

the job

the [5402]Mars

[dinosaurspen]

[kirito-1011]

Samba 4.12.0 released with huge performance improvements for SMB3 encryption, support for Elasticsearch as search backend for macOS Spotlight.

Samba 4.12.0 released with huge performance improvements for SMB3 encryption, support for Elasticsearch as search backend for macOS Spotlight.

[ad_1] submitted by /u/pdp10 [comments] [ad_2]

[kuzekeisai]

[cinor-i]

AI unlocks ancient Dead Sea Scrolls mystery

submitted by /u/pdp10 [link] [comments]

from /r/Technology https://ift.tt/2PdaFej