51 SCM simulator and 51 SCM development board have what differentiation

51 SCM simulator and 51 SCM development board have what differentiation
http://www.siliconray.com/catalogsearch/result/?q=51

Hello, microcontroller simulator is said has become the product has been in development with. As the system application. And single-chip microcomputer development board is has not become a application of basic components products just need development program. This is the main difference. I hope it can help you.
51 simulator for single-chip microcomputer lovers is learning single-chip microcomputer and learn to use KEIL C51 developed software. 51 simulation implement use a SST89C58 microcontroller to realize simulation function, fired through a serial port and PC connection. The user can development is less than or equal to 28 K program. 51 simulator user application board directly into the position of the MCU. 51 simulator main performance: directly support KEIL C51 IDE development simulation environment. Can a single step, breakpoint, run at full speed of debugging; Can reference variables, RAM variables. Support assembly, C language mixed debugging. 28 K pieces (space program can at any time for the online program updates. Completely simulation P0, P2 mouth. The simulation frequency 6-33 MHz crystals optional, system configuration 11.0592 MHz. Can the standard 89 C51 simulation, 89 C52, 89 C58 to wait all the kernel's 51 single-chip microcomputer. 51 simulators occupy