grammar edits

Author: gadilashashank

book/languages/erlang/history.md

@@ -1,28 +1,31 @@
 # History
 
-## Erlang, and its name meaning
+## Meaning of 'Erlang'
 
-The name *Erlang* was given in honor of the first scientist in the field of telecommunications: **Agner Krarup Erlang (1878-1929)**,
-Dunstan's mathematics, **pioneer in telecommunications traffic theory** and queue theory. Sometimes the name of language is sometimes interpreted as **Er**icsson + *Lang*uage = **Er***lang*.
+The name *Erlang* was given in honor of the first scientist in the field of telecommunications: **Agner Krarup Erlang (1878-1929)**
+
+Sometimes the name of language is also interpreted as **Er**icsson + *Lang*uage = **Er***lang*.
 
 ## In Ericsson lab
 
-**Between 1982 and 1986**, in Ericsson labs were conducted research on the suitability of some existing programming languages in terms of creating apps for **telecommunications** needs,
+**Between 1982 and 1986**, in Ericsson labs were conducting research on the suitability of some existing programming languages in terms of creating apps for **telecommunications** needs,
 which required **long-lasting** and **trouble-free operation with a large number of threads**.
-The features of each lamguage were analyzed, identyfiying potentional problems that they could have caused.
-Despite the gradual narrowing of the set of considered languages, it was established that **none** of them meets the company's requirements, therefore it was decided to design a **completely new language from scratch**.
+The features of each language were analyzed, identyfiying potential problems that they could have caused.
+Despite the gradual narrowing of the set of considered languages, it was established that **none** of them meet the company's requirements, therefore it was decided to design a **completely new language from scratch**.
 
-## Long story in short edition
+## Long story in short
 
 The author of the language is **Joe Armstrong**.
 He modeled Erlang on the **Prolog language** and wrote first Erlang interpreter in it.
-In **1990**, Erlang was shown publicly at the **ISS '90 conference**, which result was increased amount of users.
-But the first implementation of the language was inefficent so already in **late '80s** work on faster version began.
+In **1990**, Erlang was shown publicly at the **ISS '90 conference**, which resulted in increased number of users.
+But the first implementation of the language was so inefficent that in the **late 1980s** itself, work began on a faster version.
 **It's final release took place in 1991**.
-**Year later**, was published first book about Erlang and in **1993** Ericsson launched independent department with the development and distribution of the system and tools for it.
+**A Year later**, the first book about Erlang was published and in **1993**, Ericsson launched an independent department 
+assigned with the development and distribution of the system and tools for it.
 
-In **1998**, Ericsson launched **AXD301** switch with software that contained a milion lines of code in Erlang, which achieved a reliability index of **99.9999999%** (that's the real number!), which meant that within a year of the system could have **at most 0.0315 seconds of downtime due to a failure**.
+In **1998**, Ericsson launched **AXD301** switch with software that contained a milion lines of code in Erlang, which achieved a reliability index of **99.9999999%** (that's the real number!), which meant that in a year of usage, the system could
+have **at most 0.0315 seconds of downtime due to a failure**.
 Shortly thereafter, Ericsson banned its affiliates from using Erlang in new products due to its proprietary nature.
 **This caused a conflict between Ericsson and Armstrong, who left the company with the team.**
-**At the end of the same year**, the Erlang implementation code was **opened and made available as free software**.
-The ban was withdrawn in later years, and **Armstrong** returned to work at Ericsson in **2004**.
+**At the end of the same year**, the Erlang implementation code was **opened sourced and made available as free software**.
+The ban was withdrawn later and **Armstrong** returned to work with Ericsson in **2004**.