Home Operating Systems

UMB

Webopedia Staff
Updated on:
Short for upper memory block, a block of memory in the DOS upper memory area (UMA). UMBs are allocated and managed by a special memory manager such as EMM386.EXE, and can be used for TSRs and device drivers.

Webopedia Staff
Since 1995, more than 100 tech experts and researchers have kept Webopedia’s definitions, articles, and study guides up to date. For more information on current editorial staff, please visit our About page.

Top Articles

The Complete List of 1559 Common Text Abbreviations & Acronyms

Social Media Vangie Beal - 0
From A3 to ZZZ we list 1,559 SMS, online chat, and text abbreviations to help you translate and understand today's texting lingo. Includes Top...
Read more

List of Windows Operating System Versions & History [In Order]

Operating Systems Vangie Beal - 0
The Windows operating system (Windows OS) refers to a family of operating systems developed by Microsoft Corporation. We look at the history of Windows...
Read more

How to Create a Website Shortcut on Your Desktop

Browsers Vangie Beal - 0
Website Shortcut on Your Desktop reviewed by Web Webster   This Webopedia guide will show you how to create a website shortcut on your desktop using...
Read more

Generations of Computers (1st to 5th)

Computers Vangie Beal - 0
Reviewed by Web Webster Learn about each of the 5 generations of computers and major technology developments that have led to the computing devices that...
Read more

Related Articles

Definitions

Hotfix

A hotfix, also known as quick-fix engineering (QFE) update, is a term used...
Chika C Uchendu - 0
Read more
Definitions

Cold Calling

Cold calling is the process of contacting sales leads without any...
Kaiti Norton - 0
Read more
Definitions

Skillshare

Skillshare is a project-driven online learning community. Skillshare users have access...
Kaiti Norton - 0
Read more

Webopedia is an online dictionary and Internet search engine for information technology and computing definitions.

ADVERTISER DISCLOSURE: SOME OF THE PRODUCTS THAT APPEAR ON THIS SITE ARE FROM COMPANIES FROM WHICH TECHNOLOGYADVICE RECEIVES COMPENSATION. THIS COMPENSATION MAY IMPACT HOW AND WHERE PRODUCTS APPEAR ON THIS SITE INCLUDING, FOR EXAMPLE, THE ORDER IN WHICH THEY APPEAR. TECHNOLOGYADVICE DOES NOT INCLUDE ALL COMPANIES OR ALL TYPES OF PRODUCTS AVAILABLE IN THE MARKETPLACE.