The hardware core of embedded system is embedded processor; the software core is embedded operation system.

嵌入式系统的硬件核心是嵌入式处理器，软件核心是嵌入式操作系统。

youdao

Net2Phone aims to provide the software core for all voice services on the Net.

FORBES: Sound Idea

Agencies shall notify JFMIP on plans to acquire software supporting core financial system functions.

WHITEHOUSE: Circular No. A-127 -- Transmittal Memorandum No. 2 (Financial Management Systems) | The White House

Craft Silicon provides bespoke, cutting-edge software in core banking, microfinance, mobile, switch solutions and electronic payments for customers on four continents.

FORBES: Meet Kenya's Bill Gates - Kamal Budhabatti